Cannot start stopped docker container, user 'coder' does not exist

[miguelvelezmj25]

• Web Browser:
• Local OS: MacOS
• Remote OS: Ubuntu 18.04.5 LTS (GNU/Linux 4.15.0-123-generic x86_64)
• Remote Architecture:
• code-server --version: 3.9.0

I set up code-server with Docker as indicated in https://hub.docker.com/r/codercom/code-server

mkdir -p ~/.config
docker run -it --name code-server -p 127.0.0.1:8080:8080 \
  -v "$HOME/.config:/home/coder/.config" \
  -v "$PWD:/home/coder/project" \
  -u "$(id -u):$(id -g)" \
  -e "DOCKER_USER=$USER" \
  codercom/code-server:latest

The initial run works perfectly. I then stop the container using ctrl+c. When I try to start the container again using docker start code-server the container stops immediately. Running docker logs code-server outputs:

[2021-02-25T14:46:34.514Z] info  code-server 3.9.0 fc6d123da59a4e5a675ac8e080f66e032ba01a1b
[2021-02-25T14:46:34.516Z] info  Using user-data-dir ~/.local/share/code-server
[2021-02-25T14:46:34.537Z] info  Using config file ~/.config/code-server/config.yaml
[2021-02-25T14:46:34.538Z] info  HTTP server listening on http://0.0.0.0:8080 
[2021-02-25T14:46:34.538Z] info    - Authentication is enabled
[2021-02-25T14:46:34.538Z] info      - Using password from ~/.config/code-server/config.yaml
[2021-02-25T14:46:34.538Z] info    - Not serving HTTPS 
^Cusermod: user 'coder' does not exist

This issue seems to be related to #2267, but I am still getting the user error message.

[KaneLeung]

same problem

[kdeyko]

Having the same issue on code-server v3.9.3.
Here is the extract from my compose file:

  vscode:
    container_name: vscode
    image: codercom/code-server:3.9.3
    environment:
    - DOCKER_USER=kdeyko
    - TZ=Europe/Moscow
    - PASSWORD=supersecretpassword
    volumes:
    - /volume1/docker:/home/coder/project
    - /volume1/docker/vscode:/home/coder/.config
    user: "0:0"
    restart: always
    ports:
    - 8443:8080

[jsjoeio]

@kdeyko would be happy to look into this to help.

Is there any chance you could provide repro steps using this template?

[kdeyko]

@jsjoeio thanks for your reply!
Would you like me to create a new bug report via this template, or keep it in scope of this issue?

[jsjoeio]

Feel free to do it here (thank you for asking!).

[kdeyko]

OS/Web Information

• Web Browser: Safari 14.0.3 (though it doesn't matter)
• Local OS: macOS Catalina 10.15.7 (though it doesn't matter)
• Remote OS: Synology DSM 6.2.3 (Well, XPEnology, actually, but it should not matter).

$ uname -a
Linux cube 3.10.105 #25426 SMP Tue May 12 04:53:17 CST 2020 x86_64 GNU/Linux synology_broadwell_3617xs

$ docker --version
Docker version 18.09.8, build bfed4f5

• Remote Architecture: amd64
• code-server --version: 3.9.3 (docker image)

Steps to Reproduce

1. Create docker-compose.yaml file with the following contents:

version: '3.7'
services:

  vscode:
    container_name: vscode
    image: codercom/code-server:3.9.3
    environment:
    - DOCKER_USER=kdeyko
    - LOG_LEVEL=trace
    - TZ=Europe/Moscow
    - PASSWORD=supersecretpassword
    user: "0:0"
    restart: always
    ports:
    - 8444:8080

2. Run the following command (my user is kdeyko, this is reflected in the docker-compose.yaml file above):

$ docker-compose up -d
# Similar output should appear:
# Creating network "vscode_default" with the default driver
# Creating vscode ... done

3. [Optional, since the bug reproduces even without it] Check that code-server opens in the browser:

4. Restart the container

$ docker restart vscode

5. Try opening code-server in browser or check docker logs.

Expected

Code-server should work in browser.

Actual

Code-server cannot be opened in browser.

Curl shows "Connection refused" error:

$ curl http://localhost:8444
curl: (7) Failed to connect to localhost port 8444: Connection refused

Container logs are full of usermod: user 'coder' does not exist messages:

$ docker logs vscode
[2021-04-15T21:08:54.806Z] debug parsed command line {"args":{"_":["."],"bind-addr":"0.0.0.0:8080"}}
[2021-04-15T21:08:54.813Z] info  Wrote default config file to ~/.config/code-server/config.yaml
[2021-04-15T21:08:54.816Z] debug parsed command line {"args":{"_":[],"bind-addr":"127.0.0.1:8080","auth":"password"}}
[2021-04-15T21:08:54.823Z] debug parent:28 spawned inner process 46
[2021-04-15T21:08:55.045Z] trace parent:28 got message {"message":{"type":"handshake"}}
[2021-04-15T21:08:55.047Z] trace child:46 got message {"message":{"type":"handshake","args":{"_":["."],"bind-addr":"0.0.0.0:8080","auth":"password","password":"supersecretpassword","config":"/root/.config/code-server/config.yaml","user-data-dir":"/root/.local/share/code-server","extensions-dir":"/root/.local/share/code-server/extensions","log":"trace","verbose":true,"host":"0.0.0.0","port":8080,"proxy-domain":[],"usingEnvPassword":true,"usingEnvHashedPassword":false}}}
[2021-04-15T21:08:55.048Z] info  code-server 3.9.3 fe2dc2deb08e378069891b622bb62ad1d261d1b1
[2021-04-15T21:08:55.048Z] info  Using user-data-dir ~/.local/share/code-server
[2021-04-15T21:08:55.049Z] trace Using extensions-dir ~/.local/share/code-server/extensions
[2021-04-15T21:08:55.057Z] info  Using config file ~/.config/code-server/config.yaml
[2021-04-15T21:08:55.057Z] info  HTTP server listening on http://0.0.0.0:8080
[2021-04-15T21:08:55.057Z] info    - Authentication is enabled
[2021-04-15T21:08:55.057Z] info      - Using password from $PASSWORD
[2021-04-15T21:08:55.057Z] info    - Not serving HTTPS
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist
usermod: user 'coder' does not exist

Notes

This issue can be reproduced in VS Code: I don't think so

[jsjoeio]

This is super thorough and will be a great start for figuring out this issue. Thanks @kdeyko ♥️

[code-asher]

Must be:

https://github.com/cdr/code-server/blob/e9985bd658ac42c5bef38553b3e83fdb1e459be3/ci/release-image/entrypoint.sh#L8-L12

I guess USER must get set back to coder when the container restarts?

[kdeyko]

Just in case: I hope I understand the terms “Local OS” and “Remote OS” correctly - for “Remote OS” I mean the one on which I run the docker container.

[kdeyko]

Also I noticed that after step 4 (restarting) the container gets continuously restarted:

$ docker ps | grep vscode
982bdbc168bf        codercom/code-server:3.9.3              "/usr/bin/entrypoint…"   About a minute ago   Restarting (6) 7 seconds ago                                                    vscode

$ date
Fri Apr 16 00:48:17 MSK 2021

$ docker ps | grep vscode
982bdbc168bf        codercom/code-server:3.9.3              "/usr/bin/entrypoint…"   About a minute ago   Restarting (6) 19 seconds ago                                                    vscode

$ date
Fri Apr 16 00:48:27 MSK 2021

$ docker ps | grep vscode
982bdbc168bf        codercom/code-server:3.9.3              "/usr/bin/entrypoint…"   About a minute ago   Restarting (6) 2 seconds ago                                                    vscode

[LoongWynn]

I found that if you do not specify users, you can successfully restart it.
You can run it with args written below until the bug is fixed.

docker run -d --name code-server -p 0.0.0.0:9000:8080 \
  -v "$HOME/.config:/home/coder/.config" \
  -v "$PWD:/home/coder/project" \
  codercom/code-server:latest

[kdeyko]

@HanyuuLu, thanks, it worked! Though I still needed to use user: "0:0" in my compose file.

[videlanicolas]

I guess what we really want to check in that if statement is that the current user (as returned by id -u -n) is different from $DOCKER_USER?

sudo usermod --login "$DOCKER_USER" coder and sudo groupmod -n "$DOCKER_USER" coder will persist across restarts because it's modifying the container's disk. USER="$DOCKER_USER" will not survive a reset because environment variables will have whatever they have at the last command of Dockerfile (with the exemption of ENTRYPOINT).