Docker

Clean Docker

TODO	Command
Remove exited containers	docker rm $(docker ps -f 'status=exited' -q) sudo docker rm $(sudo docker ps -f 'status=exited' -q)
Remove unused images	docker rmi $(docker images -f "dangling=true" -q) sudo docker rmi $(sudo docker images -f "dangling=true" -q)
run and start it again	docker run --name sandbox0 \ --volume a:b \ -it alpine:3.11 docker start -i sandbox0
Make apt faster	FROM ubuntu:20.04 RUN sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list RUN apt update # In host docker run -it ubuntu:20.04 # In container sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list apt update
Run	# Mapping directory on Windows, do not use ~ docker run -v C:\Users\User\repos\something:/docroot -it someimage bash docker run -v %USERPROFILE%\repos\webserv:/docroot -it webserv-compose_web bash
		docker ps --size --all

Problems on Windows

Using volume in GitBash

Valid host directory

winpty docker run --name sandbox0 -v "C:\Users\Raymond\repos\twnews":/vol -it alpine:3.11
winpty docker run --name sandbox0 -v 'C:\Users\Raymond\repos\twnews':/vol -it alpine:3.11
winpty docker run --name sandbox0 -v C:\\Users\\Raymond\\repos\\twnews:/vol -it alpine:3.11

Unexpected error

$ winpty docker run --name sandbox0 -v C:\Users\Raymond\repos\twnews:/vol -it alpine:3.11
docker: Error response from daemon: The system cannot find the file specified.
See 'docker run --help'.

$ winpty docker run --name sandbox0 -v C:/Users/Raymond/repos/twnews:/vol -it alpine:3.11
docker: Error response from daemon: invalid mode: \Program Files\Git\vol.
See 'docker run --help'.

$ winpty docker run --name sandbox0 -v ~:/vol -it alpine:3.11
docker: Error response from daemon: mkdir C:\Users\Raymond;C: Access is denied.
See 'docker run --help'.

Bad guest path

$ winpty docker run --name sandbox0 -v /C/Users/Raymond/repos/twnews:/vol -it alpine:3.11
or
$ winpty docker run --name sandbox0 -v "/C/Users/Raymond/repos/twnews":/vol -it alpine:3.11

/ # ls -l
total 56
drwxrwxrwx    1 root     root             0 Sep 30 07:29 \Program Files\Git\vol
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 bin
drwxr-xr-x    5 root     root           360 Sep 30 08:46 dev
drwxr-xr-x    1 root     root          4096 Sep 30 08:46 etc
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 home
drwxr-xr-x    5 root     root          4096 Apr 23 06:25 lib
drwxr-xr-x    5 root     root          4096 Apr 23 06:25 media
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 mnt
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 opt
dr-xr-xr-x  154 root     root             0 Sep 30 08:46 proc
drwx------    1 root     root          4096 Sep 30 08:46 root
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 run
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 sbin
drwxr-xr-x    2 root     root          4096 Apr 23 06:25 srv
dr-xr-xr-x   12 root     root             0 Sep 30 08:46 sys
drwxrwxrwt    2 root     root          4096 Apr 23 06:25 tmp
drwxr-xr-x    7 root     root          4096 Apr 23 06:25 usr
drwxr-xr-x   12 root     root          4096 Apr 23 06:25 var

Problems on Synology DSM

TODO

System comparison

	Ubuntu 20.04	Alpine 3.11
bash	O	X
netstat	X	O
ifconfig	X	O