Steamcmd Docker Image

Steamcmd in a ready to run docker image. For your convenience, there are two symlinks you can copy or mount:

• /steamapps
• /config

Run interactively

docker run -it --name steamcmd left4devops/steamcmd

Valve steamcmd wiki

Install a game

Mount a directory, login (as gabenin this example, some games allow you to download after logging in as anonymous) and download a game (222860, Left 4 Dead 2 Dedicated Server). You can lookup other App IDs on SteamDB.

docker run -it -v $(pwd)/steamapps:/steamapps --name steamcmd left4devops/steamcmd +login gaben +app_update 222860 +quit

Generate a logged in config.vdf

This can be used to avoid providing your credentials when logging in to install authenticated content.

docker run -it --name steamcmd left4devops/steamcmd +login gaben +quit
docker cp steamcmd:/config/config.vdf .
docker rm steamcmd

Authenticated download, then copy into another image

Download using this image, then copy the output to a new image without any credentials to clean up.

Example Dockerfile

FROM left4devops/steamcmd AS credentials
RUN --mount=type=secret,uid=1000,gid=1000,id=steam,target=/config/config.vdf \
    ./steamcmd.sh +login gaben +app_update 222860 +quit

FROM rockylinux/rockylinux:9-minimal AS game
COPY --chown=1000:1000 --from=credentials \
    "/steamapps/common/Left 4 Dead 2 Dedicated Server" \
    /l4d2

Provide the credentials for the above docker build --secret id=steam,src="$(pwd)/config.vdf" .

Build this image

docker build -t left4devops/steamcmd .