Services/Docker: Difference between revisions

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= Clean Docker =
= Clean Docker =
-v option cannot work on GitBash


{| class="wikitable"
{| class="wikitable"
! TODO || Command
! TODO || Command
|-
| Run debian image on Windows ||
<syntaxhighlight lang="bash">
# Git Bash
winpty docker run --name=debian0 -it debian:12
# Power Shell
docker run --name=debian0 -it debian:12
</syntaxhighlight>
|-
| Open shell of running container ||
<syntaxhighlight lang="bash">
docker exec -it mwdev-mediawiki-1 /bin/bash
</syntaxhighlight>
|-
| Copy file from running container ||
<syntaxhighlight lang="bash">
docker cp mwdev-mediawiki-1:/var/www/data/my_wiki.sqlite .
</syntaxhighlight>
|-
| Build image ||
<syntaxhighlight lang="bash">
docker build .
docker build -t gdtile:2.1 .
docker tag c8abdb693116 gdtile:2.1
</syntaxhighlight>
|-
|-
| Remove exited containers ||
| Remove exited containers ||
<source lang="bash">
<syntaxhighlight lang="bash">
docker rm $(docker ps -f 'status=exited' -q)
docker rm $(docker ps -f 'status=exited' -q)


sudo docker rm $(sudo docker ps -f 'status=exited' -q)
sudo docker rm $(sudo docker ps -f 'status=exited' -q)
</source>
</syntaxhighlight>
|-
|-
| Remove unused images ||
| Remove unused images ||
<source lang="bash">
<syntaxhighlight lang="bash">
docker rmi $(docker images -f "dangling=true" -q)
docker rmi $(docker images -f "dangling=true" -q)


sudo docker rmi $(sudo docker images -f "dangling=true" -q)
sudo docker rmi $(sudo docker images -f "dangling=true" -q)
</source>
</syntaxhighlight>
|-
|-
| run and start it again ||
| run and start it again ||
<source lang="docker">
<syntaxhighlight lang="docker">
docker run --name sandbox0 \
docker run --name sandbox0 \
   --volume a:b \
   --volume a:b \
   -it alpine:3.11
   -it alpine:3.11
docker start -i sandbox0
docker start -i sandbox0
</source>
</syntaxhighlight>
|-
|-
| Make apt faster ||
| Make apt faster ||
<source lang="docker">
<syntaxhighlight lang="docker">
FROM ubuntu:20.04
FROM ubuntu:20.04


RUN sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list
RUN sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list
RUN apt update
RUN apt update
</source>
</syntaxhighlight>


<source lang="bash">
<syntaxhighlight lang="bash">
# In host
# In host
docker run -it ubuntu:20.04
docker run -it ubuntu:20.04
Line 42: Line 66:
sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list
sed -i 's/\(archive\|security\).ubuntu.com/free.nchc.org.tw/' /etc/apt/sources.list
apt update
apt update
</source>
</syntaxhighlight>
|-
|-
| Run ||
| Run ||
<source lang="docker">
<syntaxhighlight lang="docker">
# Mapping directory on Windows, do not use ~
# Mapping directory on Windows, do not use ~
docker run -v C:\Users\User\repos\something:/docroot -it someimage bash
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 run -v %USERPROFILE%\repos\webserv:/docroot -it webserv-compose_web bash
</source>
</syntaxhighlight>
|-
| test ||
<syntaxhighlight lang="docker">
docker ps --size --all
</syntaxhighlight>
|-
| logs ||
<syntaxhighlight lang="docker">
docker ps logs -ft container
</syntaxhighlight>
|}
|}


= Problems on Windows =
= Dockerfile Debugging =


== Don't use GitBash if run with -v (--volume) option. ==
{| class="wikitable"
! TODO || Command
|-
| Verify environment variable<br>(stdout won't be printed) ||
<syntaxhighlight lang="docker">
RUN export NVM_DIR="$HOME/.nvm"
RUN echo "NVM_DIR=$NVM_DIR" >&2
</syntaxhighlight>
|-
|  ||
<syntaxhighlight lang="docker">
docker compose build --progress=plain
</syntaxhighlight>


While run docker under GitBash, path would be replace unexpectedly.
|-
 
|  ||
Such as the following example, mount point "/vol" was replaced by "\Programs Files\Git\vol".
<syntaxhighlight lang="docker">
 
docker compose build --no-cache --progress=plain
<pre>
</syntaxhighlight>
/ # 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 08:06 dev
drwxr-xr-x    1 root    root          4096 Sep 30 08:06 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  153 root    root            0 Sep 30 08:06 proc
drwx------    1 root    root          4096 Sep 30 08:06 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 08:06 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
</pre>
 
= Problems on Synology DSM =
 
TODO

Latest revision as of 09:39, 26 September 2025

Clean Docker

TODO Command
Run debian image on Windows 
# Git Bash
winpty docker run --name=debian0 -it debian:12

# Power Shell
docker run --name=debian0 -it debian:12
Open shell of running container 
docker exec -it mwdev-mediawiki-1 /bin/bash
Copy file from running container 
docker cp mwdev-mediawiki-1:/var/www/data/my_wiki.sqlite .
Build image 
docker build .
docker build -t gdtile:2.1 .
docker tag c8abdb693116 gdtile:2.1
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
test 
docker ps --size --all
logs 
docker ps logs -ft container

Dockerfile Debugging

TODO Command
Verify environment variable
(stdout won't be printed)		 
RUN export NVM_DIR="$HOME/.nvm"
RUN echo "NVM_DIR=$NVM_DIR" >&2

docker compose build --progress=plain

docker compose build --no-cache --progress=plain
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