# filter and remove docker images, containers
docker rm $(docker ps --all -q -f status=dead)
docker rmi $(docker images -qa -f 'dangling=true')
docker rm alpine && docker rmi alpine:3.8
# docker container debug, checking history & service
docker run --name='alpine' -it alpine:3.8
docker exec -it alpine /bin/bash
docker exec -it alpine bash
docker history alpine:3.8
docker logs alpine
# alpine linux install packages
apk add apache2-ctl --no-cache
apk add apache2 php5-apache2 --no-cache
apk add openrc --no-cache
apk add wget --no-cache
apk add vim --no-cache
# alpine linux services
rc-service apache2 start
rc-update add apache2
rc-status --crashed
rc-status --manual
rc-status --list
# configuration check
apachectl -t