Docker: Difference between revisions

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Line 1: Line 1:
<syntaxhighlight lang="bash">
sudo usermod -aG docker $USER
newgrp docker
mkdir "$HOME/.docker"
sudo chown "$USER":"$USER" "$HOME/.docker" -R
sudo chmod g+rwx "$HOME/.docker" -R
sudo systemctl daemon-reload
sudo systemctl restart docker.service
</syntaxhighlight>
==Windows 10 Home==
==Windows 10 Home==
<source lang="powershell">
<syntaxhighlight lang="powershell">
# powershell
# powershell
dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
wsl --set-default-version 2
wsl --set-default-version 2
</source>
</syntaxhighlight>


<source lang="powershell">
<syntaxhighlight lang="powershell">
# powershell
# powershell
docker pull hello-world
docker pull hello-world
docker run -it --rm --name hello hello-world:latest
docker run -it --rm --name hello hello-world:latest
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
# gitbash
# gitbash
winpty docker pull hello-world
winpty docker pull hello-world
winpty docker run -it --rm --name hello hello-world:latest
winpty docker run -it --rm --name hello hello-world:latest
</source>
</syntaxhighlight>


==Networking==
==Networking==
{|
{|
| valign="top" |
| valign="top" |
<source lang="json">
<syntaxhighlight lang="json">
cat <<EOF > /etc/docker/daemon.json
cat << EOF | sudo tee /etc/docker/daemon.json >/dev/null
{
{
     "bip"  : "10.20.13.1/24",
     "bip"  : "10.20.13.1/24",
     "mtu"  : 1500,
     "mtu"  : 1500,
     "dns"  : [
     "dns"  : [
         "10.19.83.5",
         "10.19.83.100",
         "10.19.83.1"
         "10.19.83.1"
     ],
     ],
Line 34: Line 46:
}
}
EOF
EOF
</source>
</syntaxhighlight>


| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="json">
cat << EOF | sudo tee /etc/docker/daemon.json >/dev/null
{
    "mtu"  : 1500,
    "debug" : true,
    "experimental": false,
    "default-address-pools" :[{
        "base"  : "10.20.0.0/16",
        "size"  : 24
    }]
}
EOF
</syntaxhighlight>
|}
 
<syntaxhighlight lang="bash">
apt install -y iputils
apt install -y iputils
iptables -t nat -S
iptables -t nat -S
Line 49: Line 76:
docker run --rm --detach --publish 1983:80 --net=ckn.b00 --ip 10.20.15.10 nginx
docker run --rm --detach --publish 1983:80 --net=ckn.b00 --ip 10.20.15.10 nginx
docker run --rm --detach --publish 1983:80 --net=ckn.b01 --ip 10.20.16.10 nginx
docker run --rm --detach --publish 1983:80 --net=ckn.b01 --ip 10.20.16.10 nginx
</source>
</syntaxhighlight>
|}


===Bridge===
===Bridge===
<source lang="bash">
<syntaxhighlight lang="bash">
docker network create \
docker network create \
--driver bridge \
--driver bridge \
Line 63: Line 89:
--opt com.docker.network.bridge.host_binding_ipv4=0.0.0.0 \
--opt com.docker.network.bridge.host_binding_ipv4=0.0.0.0 \
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00
</source>
</syntaxhighlight>
----
----


===MAC VLAN===
===MAC VLAN===
'''Bridge mode'''
'''Bridge mode'''
<source lang="bash">
<syntaxhighlight lang="bash">
docker network create \
docker network create \
--driver macvlan \
--driver macvlan \
Line 74: Line 100:
--subnet  10.20.20.0/24 \
--subnet  10.20.20.0/24 \
--opt parent=wlan0 ckn.v00
--opt parent=wlan0 ckn.v00
</source>
</syntaxhighlight>


'''802.1q trunk bridge mode'''
'''802.1q trunk bridge mode'''
<source lang="bash">
<syntaxhighlight lang="bash">
docker network create \
docker network create \
--driver macvlan \
--driver macvlan \
Line 84: Line 110:
--ip-range 10.20.20.240/28 \
--ip-range 10.20.20.240/28 \
--opt parent=wlan0.01 ckn.v01
--opt parent=wlan0.01 ckn.v01
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker network inspect ckn.v00
docker network inspect ckn.v00
docker network connect ckn.v00 nginx
docker network connect ckn.v00 nginx
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker exec -it nginx ls -lah /sys/class/net/
docker exec -it nginx ls -lah /sys/class/net/
docker exec -it nginx cat /etc/resolv.conf
docker exec -it nginx cat /etc/resolv.conf
Line 100: Line 126:
curl -v http://localhost:1983
curl -v http://localhost:1983
curl -v http://10.20.20.240
curl -v http://10.20.20.240
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker network disconnect bridge nginx
docker network disconnect bridge nginx
docker network disconnect ckn.v00 nginx
docker network disconnect ckn.v00 nginx
</source>
</syntaxhighlight>


----
----


===IP VLAN===
===IP VLAN===
<source lang="bash">
<syntaxhighlight lang="bash">
docker network create -d ipvlan \
docker network create -d ipvlan \
--subnet=10.20.1.0/24 \
--subnet=10.20.1.0/24 \
Line 117: Line 143:
--gateway=10.20.2.254 \
--gateway=10.20.2.254 \
--opt ipvlan_mode=l2 ckn.i00
--opt ipvlan_mode=l2 ckn.i00
</source>
</syntaxhighlight>
 
==Cache or Mirror==
<syntaxhighlight lang="properties">
mkdir -p /etc/docker/registry
cat <<EOF > /etc/docker/registry/config.yml
proxy:
  remoteurl: https://hub.chorke.org
  username: academia
  password: sadaqah!
EOF
</syntaxhighlight>
 
==Add Tag & Push ==
<syntaxhighlight lang="properties">
RFIND_FILL="s|docker.chorke.com|docker.chorke.org|";\
OLD_IMAGES="$(docker images --format 'table {{.Repository}}:{{.Tag}}'|grep chorke)";\
for OLD_IMAGE in ${OLD_IMAGES};do\
    NEW_IMAGE="$(echo ${OLD_IMAGE}|sed ${RFIND_FILL})";\
    docker tag  ${OLD_IMAGE} ${NEW_IMAGE} &&\
    docker push ${NEW_IMAGE} &&\
    docker rmi  ${NEW_IMAGE} &&\
    docker rmi  ${OLD_IMAGE};\
done
</syntaxhighlight>


==Troubleshoot==
==Troubleshoot==
{|
{|
| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="bash">
docker run --rm --net=host busybox nslookup google.com
docker run --rm --net=host busybox nslookup google.com
docker run --rm --net=host alpine cat /etc/resolv.conf
docker run --rm --net=host alpine cat /etc/resolv.conf
Line 131: Line 181:
docker run --rm --net=host alpine ip addr
docker run --rm --net=host alpine ip addr
docker run --rm --net=host alpine route
docker run --rm --net=host alpine route
</source>
</syntaxhighlight>


| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="bash">
docker run --rm busybox nslookup google.com
docker run --rm busybox nslookup google.com
docker run --rm alpine cat /etc/resolv.conf
docker run --rm alpine cat /etc/resolv.conf
Line 143: Line 193:
docker run --rm alpine ip addr
docker run --rm alpine ip addr
docker run --rm alpine route
docker run --rm alpine route
</source>
</syntaxhighlight>
 
|-
| colspan="2" |
----
|-
| valign="top" colspan="2"|
<syntaxhighlight lang="bash">
docker run --add-host=host.docker.internal:host-gateway\
-it --rm alpine ping host.docker.internal
</syntaxhighlight>
 
<syntaxhighlight lang="bash">
docker run --add-host=host.docker.internal:host-gateway\
-it --rm alpine sh
</syntaxhighlight>
 
docker inspect crawler|grep compose
docker logs    crawler
docker logs -f crawler
|}
|}


<source lang="bash">
<syntaxhighlight lang="bash">
export DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 --iptables=false --ip-forward=false"
export DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 --iptables=false --ip-forward=false"
firewall-cmd --permanent --zone=trusted --change-interface=docker0
firewall-cmd --permanent --zone=trusted --change-interface=docker0
firewall-cmd --reload
firewall-cmd --reload
systemctl restart docker
systemctl restart docker
</source>
</syntaxhighlight>
 
{|
{|
| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="bash">
systemctl stop docker
systemctl stop docker
rm -fr /var/lib/docker
rm -fr /var/lib/docker
rm -fr /etc/docker
rm -fr /etc/docker
pkill docker
pkill docker
</source>
</syntaxhighlight>


| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="bash">
iptables -t nat -F
iptables -t nat -F
ifconfig docker0 down
ifconfig docker0 down
brctl delbr docker0
brctl delbr docker0
systemctl start docker
systemctl start docker
</source>
</syntaxhighlight>


| valign="top" |
| valign="top" |
<source lang="bash">
<syntaxhighlight lang="bash">
vim /etc/selinux/config
vim /etc/selinux/config
shutdown -r now
shutdown -r now
setenforce 0
setenforce 0
sestatus
sestatus
</source>
</syntaxhighlight>
|}
|}
'''devil most things for docker0 bridge'''
sudo apt remove netscript-2.4
sudo apt purge  netscript-2.4
sudo apt autoremove
==Ryzen AMD-V==
Yes, AMD Ryzen 9 3900x supports virtualization. Almost every processors released since a long time have Virtualization. For Windows it's Vt-x or SVM(in some AMD motherboard vtx is renamed as SVM).
==Images Path==
<syntaxhighlight lang="properties">
Ubuntu: /var/lib/docker/
Fedora: /var/lib/docker/
Debian: /var/lib/docker/
Windows: C:\ProgramData\DockerDesktop
MacOS: ~/Library/Containers/com.docker.docker/Data/vms/0/
</syntaxhighlight>


==Knowledge==
==Knowledge==
<source lang="bash">
<syntaxhighlight lang="bash">
docker network ls
docker network ls
docker network prune
docker network prune
docker network rm ckn.b00 ckn.b01
docker network rm ckn.b00 ckn.b01


docker inspect nginx|grep compose
docker inspect nginx|grep "IPAddress"
docker inspect nginx|grep "IPAddress"
docker network inspect bridge|grep "Gateway"
docker network inspect bridge|grep "Gateway"
</source>
</syntaxhighlight>
 
docker rm $(docker ps -a -q)
docker stop $(docker ps -a -q)
 
<syntaxhighlight lang="bash">
docker inspect nginx
docker update --restart=no nginx
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker run --rm -dit --network \
docker run --rm -dit --network \
none --name alpine alpine:latest ash;\
none --name alpine alpine:latest ash;\
docker exec -it alpine ip link show
docker exec -it alpine ip link show
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker network create --driver bridge \
docker network create --driver bridge \
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker network connect ckn.b00 nginx
docker network connect ckn.b00 nginx
docker exec -it nginx cat /etc/hosts
docker exec -it nginx cat /etc/hosts
Line 205: Line 301:
docker exec -it nginx cat /etc/resolv.conf
docker exec -it nginx cat /etc/resolv.conf
docker exec -it nginx ls -lah /sys/class/net/
docker exec -it nginx ls -lah /sys/class/net/
</source>
docker run --add-host=host.docker.internal:host-gateway\
--rm alpine ping host.docker.internal
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker cp ~/.m2/settings.xml alpine:/root/.m2/settings.xml
docker cp alpine:/root/.m2/settings.xml ~/.m2/settings.xml
</syntaxhighlight>
 
<syntaxhighlight lang="bash">
docker network disconnect bridge nginx
docker network disconnect bridge nginx
docker network disconnect ckn.b00 nginx
docker network disconnect ckn.b00 nginx
docker exec -it nginx ls -lah /sys/class/net/
docker exec -it nginx ls -lah /sys/class/net/
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
docker run -itd --network=ckn.b00 nginx
docker run -itd --network=ckn.b00 nginx
docker network disconnect ckn.b00 nginx
docker network disconnect ckn.b00 nginx
docker network connect --alias db --alias mysql ckn.b00 mysql
docker network connect --alias db --alias mysql ckn.b00 mysql
</source>
</syntaxhighlight>
 
<syntaxhighlight lang="bash">
docker inspect -f '{{.Name}} - {{.NetworkSettings.IPAddress }}' $(docker ps -aq)
docker ps --filter volume=remote-volume --format "table {{.ID}}\t{{.Mounts}}"
docker ps --filter volume=/data --format "table {{.ID}}\t{{.Mounts}}"
docker ps --format "table {{.ID}}\t{{.Labels}}"
docker ps --format '{{.Names}}\t{{.Image}}'
docker ps --format "{{.ID}}: {{.Command}}"
docker ps --filter publish=80/udp
</syntaxhighlight>


==Reference==
==Reference==
Line 257: Line 370:
* [https://docs.docker.com/engine/reference/commandline/network/ Docker Network]
* [https://docs.docker.com/engine/reference/commandline/network/ Docker Network]


|}
|-
| colspan="3" |
----
----
{|
|-
| valign="top" |
| valign="top" |
* [https://www.freecodecamp.org/news/how-to-get-a-docker-container-ip-address-explained-with-examples/ How to Get A Docker Container IP Address]
* [https://www.freecodecamp.org/news/how-to-get-a-docker-container-ip-address-explained-with-examples/ How to Get A Docker Container IP Address]
Line 273: Line 387:


| valign="top" |
| valign="top" |
* [https://forums.docker.com/t/network-bridge-docker0-cant-connect-to-local-network/78175/16#:~:text=default-address-pools <code>Docker0</code> can’t connect to Local Network]
* [https://stackoverflow.com/questions/42158596/can-windows-containers-be-hosted-on-linux#:~:text=solution%20which%20uses%20Vagrant%20and%20Packer%20on%20Mac Can Windows Containers be hosted on Linux?]
* [https://forums.docker.com/t/network-bridge-docker0-cant-connect-to-local-network/78175/17#:~:text=default-address-pools <code>Docker0</code> can’t connect to Local Network]
* [https://docs.docker.com/registry/recipes/mirror/#run-a-registry-as-a-pull-through-cache Run a Registry as a pull-through Cache]
* [https://docs.docker.com/network/bridge/#configure-the-default-bridge-network Customize the <code>docker0</code> bridge]
* [https://docs.docker.com/network/bridge/#configure-the-default-bridge-network Customize the <code>docker0</code> bridge]
* [https://github.com/docker-library/postgres PostgreSQL Docker Community]
* [https://docs.docker.com/docker-for-mac/apple-m1/ Docker Apple M1 Tech Preview]
* [https://github.com/docker-library/openjdk OpenJDK Docker Community]
* [https://github.com/docker-library/python Python Docker Community]
* [https://hub.docker.com/r/arm32v6/postgres/ PostgreSQL <code>arm32v6</code>]
* [https://itnext.io/docker-in-docker-521958d34efd Docker in Docker]
| valign="top" |
* [https://github.com/StefanScherer/windows-docker-machine Windows Container using Vagrant & Packer on Mac]
* [https://stackoverflow.com/questions/10268583/ Downloading Java JDK on Linux via wget]
* [https://blog.developer.atlassian.com/minimal-java-docker-containers/ Smaller Java images with Alpine Linux]
* [https://hub.packtpub.com/build-java-ee-containers-using-docker-tutorial/ Build Java EE containers using Docker]
* [https://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/ Don't use Docker in Docker for CI]
* [https://www.docker.com/blog/how-to-deploy-on-remote-docker-hosts-with-docker-compose/ Docker Compose Remote Deploy]
* [https://www.consul.io/use-cases/service-discovery-and-health-checking Consul Service Discovery]
* [https://doc.traefik.io/traefik/providers/overview/ Traefik Service Discovery]
* [https://flume.apache.org/ Apache Flume]
* [https://kafka.apache.org/ Apache Kafka]
|-
| colspan="3" |
----
|-
| valign="top" |
* [https://docs.microsoft.com/en-us/virtualization/windowscontainers/manage-docker/configure-docker-daemon Configure Docker <code>daemon.json</code> on Windows]
* [https://logging.apache.org/log4j/2.x/manual/cloud.html Using Log4j in Cloud Enabled Applications]
* [https://stackoverflow.com/questions/37599128/ Disable auto-restart of a container]
* [https://docs.docker.com/engine/install/linux-postinstall/ Post-installation steps for Linux]
* [https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB0383441 Copy files to/from a container]
* [https://www.freecodecamp.org/news/where-are-docker-images-stored-docker-container-paths-explained/ Docker Images Stored Path]
* [https://docs.docker.com/develop/develop-images/multistage-build/ Docker multi-stage builds]
* [[Docker on Windows]]
* [[Linux Containers]]
* [[Podman]]
| valign="top" |
* [https://devopscube.com/reduce-docker-image-size/ Reduce Docker Image Size: 6 Optimal Methods]
* [https://medium.com/@TimvanBaarsen/how-to-connect-to-the-docker-host-from-inside-a-docker-container-112b4c71bc66  Connect to the Docker host from a Container]
* [https://kool.dev/ Kool standardizes the way you work across]
* [https://docs.docker.com/desktop/mac/apple-silicon/ Docker Desktop for Apple silicon]
* [https://stackoverflow.com/questions/40082608/ Delete interface <code>docker0</code>]
* [https://docs.docker.com/develop/develop-images/multistage-build/ Docker Multi-Stage builds]
* [https://vsupalov.com/docker-arg-vs-env/ Docker ARG vs ENV]
* [[Docker Compose]]
* [[Vagrant]]
* [[Qemu]]
| valign="top" |
* [https://medium.com/@TimvanBaarsen/how-to-connect-to-the-docker-host-from-inside-a-docker-container-112b4c71bc66  Docker » Host » <code>host.docker.internal</code>]
* [https://github.com/pgadmin-org/pgadmin4/blob/master/Dockerfile Alpine » Dockerfile » PgAdmin 4]
* [https://github.com/better/alpine-tensorflow/blob/master/Dockerfile Alpine » Dockerfile » Tensorflow]
* [https://stackoverflow.com/questions/35689628/ Docker » Alpine Shell Access]
* [https://help.ubuntu.com/community/WakeOnLan Setting Up Wake-on-LAN]
* [https://docs.docker.com/engine/reference/commandline/checkpoint/ Docker » Checkpoint]
* [[Java Remote Debug]]
* [[Multipass]]
* [[Proxmox]]
* [[Juju]]
|-
| colspan="3" |
----
|-
| valign="top" |
* [[Dockerized PostgreSQL|Docker » PostgreSQL]]
| valign="top" |
| valign="top" |


|}
|}

Latest revision as of 22:48, 25 September 2024

sudo usermod -aG docker $USER
newgrp docker

mkdir "$HOME/.docker"
sudo chown "$USER":"$USER" "$HOME/.docker" -R
sudo chmod g+rwx "$HOME/.docker" -R

sudo systemctl daemon-reload
sudo systemctl restart docker.service

Windows 10 Home

# powershell
dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
wsl --set-default-version 2
# powershell
docker pull hello-world
docker run -it --rm --name hello hello-world:latest
# gitbash
winpty docker pull hello-world
winpty docker run -it --rm --name hello hello-world:latest

Networking

cat << EOF | sudo tee /etc/docker/daemon.json >/dev/null
{
    "bip"  : "10.20.13.1/24",
    "mtu"  : 1500,
    "dns"  : [
        "10.19.83.100",
        "10.19.83.1"
    ],
    "debug": true
}
EOF
cat << EOF | sudo tee /etc/docker/daemon.json >/dev/null
{
    "mtu"   : 1500,
    "debug" : true,
    "experimental": false,
    "default-address-pools" :[{
        "base"  : "10.20.0.0/16",
        "size"  : 24
    }]
}
EOF
apt install -y iputils
iptables -t nat -S

service docker stop
service docker start

docker run --rm --detach --publish 1983:80 nginx
docker run --rm --detach --net=host nginx

docker run --rm --detach --publish 1983:80 --net=ckn.b00 --ip 10.20.15.10 nginx
docker run --rm --detach --publish 1983:80 --net=ckn.b01 --ip 10.20.16.10 nginx

Bridge

docker network create \
--driver bridge \
--gateway  10.20.15.1 \
--subnet   10.20.15.0/24 \
--opt com.docker.network.driver.mtu=1500 \
--opt com.docker.network.bridge.enable_icc=true \
--opt com.docker.network.bridge.enable_ip_masquerade=true \
--opt com.docker.network.bridge.host_binding_ipv4=0.0.0.0 \
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00

MAC VLAN

Bridge mode

docker network create \
--driver macvlan \
--gateway  10.20.20.1 \
--subnet   10.20.20.0/24 \
--opt parent=wlan0 ckn.v00

802.1q trunk bridge mode

docker network create \
--driver macvlan \
--gateway  10.20.20.1 \
--subnet   10.20.20.0/24 \
--ip-range 10.20.20.240/28 \
--opt parent=wlan0.01 ckn.v01
docker network inspect ckn.v00
docker network connect ckn.v00 nginx
docker exec -it nginx ls -lah /sys/class/net/
docker exec -it nginx cat /etc/resolv.conf
docker inspect nginx|grep "IPAddress"
docker exec -it nginx cat /etc/hosts

curl -v http://10.20.20.240:1983
curl -v http://localhost:1983
curl -v http://10.20.20.240
docker network disconnect bridge nginx
docker network disconnect ckn.v00 nginx

IP VLAN

docker network create -d ipvlan \
--subnet=10.20.1.0/24 \
--subnet=10.20.2.0/24 \
--gateway=10.20.1.254 \
--gateway=10.20.2.254 \
--opt ipvlan_mode=l2 ckn.i00

Cache or Mirror

mkdir -p /etc/docker/registry
cat <<EOF > /etc/docker/registry/config.yml
proxy:
  remoteurl: https://hub.chorke.org
  username: academia
  password: sadaqah!
EOF

Add Tag & Push

RFIND_FILL="s|docker.chorke.com|docker.chorke.org|";\
OLD_IMAGES="$(docker images --format 'table {{.Repository}}:{{.Tag}}'|grep chorke)";\
for OLD_IMAGE in ${OLD_IMAGES};do\
    NEW_IMAGE="$(echo ${OLD_IMAGE}|sed ${RFIND_FILL})";\
    docker tag  ${OLD_IMAGE} ${NEW_IMAGE} &&\
    docker push ${NEW_IMAGE} &&\
    docker rmi  ${NEW_IMAGE} &&\
    docker rmi  ${OLD_IMAGE};\
done

Troubleshoot

docker run --rm --net=host busybox nslookup google.com
docker run --rm --net=host alpine cat /etc/resolv.conf
docker run --rm --net=host alpine nslookup google.com
docker run --rm --net=host alpine ping google.com
docker run --rm --net=host alpine cat /etc/hosts
docker run --rm --net=host alpine ifconfig
docker run --rm --net=host alpine ip addr
docker run --rm --net=host alpine route
docker run --rm busybox nslookup google.com
docker run --rm alpine cat /etc/resolv.conf
docker run --rm alpine nslookup google.com
docker run --rm alpine ping google.com
docker run --rm alpine cat /etc/hosts
docker run --rm alpine ifconfig
docker run --rm alpine ip addr
docker run --rm alpine route

docker run --add-host=host.docker.internal:host-gateway\
 -it --rm alpine ping host.docker.internal
docker run --add-host=host.docker.internal:host-gateway\
 -it --rm alpine sh
docker inspect crawler|grep compose
docker logs    crawler
docker logs -f crawler
export DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 --iptables=false --ip-forward=false"
firewall-cmd --permanent --zone=trusted --change-interface=docker0
firewall-cmd --reload
systemctl restart docker
systemctl stop docker
rm -fr /var/lib/docker
rm -fr /etc/docker
pkill docker
iptables -t nat -F
ifconfig docker0 down
brctl delbr docker0
systemctl start docker
vim /etc/selinux/config
shutdown -r now
setenforce 0
sestatus
devil most things for docker0 bridge
sudo apt remove netscript-2.4
sudo apt purge  netscript-2.4
sudo apt autoremove

Ryzen AMD-V

Yes, AMD Ryzen 9 3900x supports virtualization. Almost every processors released since a long time have Virtualization. For Windows it's Vt-x or SVM(in some AMD motherboard vtx is renamed as SVM).

Images Path

Ubuntu: /var/lib/docker/
Fedora: /var/lib/docker/
Debian: /var/lib/docker/
Windows: C:\ProgramData\DockerDesktop
MacOS: ~/Library/Containers/com.docker.docker/Data/vms/0/

Knowledge

docker network ls
docker network prune
docker network rm ckn.b00 ckn.b01

docker inspect nginx|grep compose
docker inspect nginx|grep "IPAddress"
docker network inspect bridge|grep "Gateway"
docker rm $(docker ps -a -q)
docker stop $(docker ps -a -q)
docker inspect nginx
docker update --restart=no nginx
docker run --rm -dit --network \
none --name alpine alpine:latest ash;\
docker exec -it alpine ip link show
docker network create --driver bridge \
--opt com.docker.network.bridge.name=ckn.b00 ckn.b00
docker network connect ckn.b00 nginx
docker exec -it nginx cat /etc/hosts
docker inspect nginx|grep "IPAddress"
docker exec -it nginx cat /etc/resolv.conf
docker exec -it nginx ls -lah /sys/class/net/
docker run --add-host=host.docker.internal:host-gateway\
 --rm alpine ping host.docker.internal
docker cp ~/.m2/settings.xml alpine:/root/.m2/settings.xml
docker cp alpine:/root/.m2/settings.xml ~/.m2/settings.xml
docker network disconnect bridge nginx
docker network disconnect ckn.b00 nginx
docker exec -it nginx ls -lah /sys/class/net/
docker run -itd --network=ckn.b00 nginx
docker network disconnect ckn.b00 nginx
docker network connect --alias db --alias mysql ckn.b00 mysql
docker inspect -f '{{.Name}} - {{.NetworkSettings.IPAddress }}' $(docker ps -aq)
docker ps --filter volume=remote-volume --format "table {{.ID}}\t{{.Mounts}}"
docker ps --filter volume=/data --format "table {{.ID}}\t{{.Mounts}}"
docker ps --format "table {{.ID}}\t{{.Labels}}"
docker ps --format '{{.Names}}\t{{.Image}}'
docker ps --format "{{.ID}}: {{.Command}}"
docker ps --filter publish=80/udp

Reference