Garry's Mod server

Run a Garry's Mod server easily inside a docker container

Supported tags

latest - the most recent production-ready image, based on debian
debian - a gmod server based on debian
debian-x64 - (NOT STABLE YET) a gmod server based on debian but running on beta version of srcds for x64 bit CPUs
debian-root - same as debian but executed as root user
debian-x64-root - same as debian-x64 but executed as root user
debian-post - same as debian but the server is installed with the container starting
ubuntu - a gmod server based on ubuntu

Features

Run a server under a linux non-root user
Run a server under an anonymous steam user
Run server commands normally
Installed CSS content
Check and update server automatically
Production and development build

Documentation

Ports

The container uses the following ports:

:27015 TCP/UDP as the game transmission, pings and RCON port
:27005 UDP as the client port

You can read more about these ports on the official srcds documentation.

Environment variables

PRODUCTION

Set if the server should be opened in production mode. This will make hot reload modifications to lua files not working. Possible values are 0(default) or 1.

HOSTNAME

Set the server name on startup.

MAXPLAYERS

Set the maximum players allowed to join the server. Default is 16.

GAMEMODE

Set the server gamemode on startup. Default is sandbox.

MAP

Set the map gamemode on startup. Default is gm_construct.

PORT

Set the server port on container. Default is 27015.

GSLT

Set the server GSLT credential to be used.

ARGS

Set any other custom args you want to pass to srcds runner.

Directory structure

It's not the full directory tree, I just put the ones I thought most important

📦 /home/gmod // The server root
|__📁steamcmd // Steam cmd, used to update the server when needed
|__📁mounts // All third party games should be installed here
|  |  |__📁cstrike // Counter strike: Source comes installed as default
|__📁server
|  |__📁garrysmod
|  |  |__📁addons // Put your addons here
|  |  |__📁gamemodes // Put your gamemodes here
|  |  |__📁data
|  |  |__📁cfg
|  |  |  |__⚙️server.cfg
|  |  |__📁lua
|  |  |__📁cfg
|  |  |__💾sv.db
|  |__📃srcds_run
|__📃start.sh // Script to start the server
|__📃update.txt // Steam cmd script to run before start the server

Examples

This will start a simple server in a container named gmod-server:

docker run \
    -p 27015:27015/udp \
    -p 27015:27015 \
    -p 27005:27005/udp \
    --name gmod-server \
    -it \
    ceifa/gmod-server

This will start a server with host workshop collection pointing to 382793424 named gmod-server:

docker run \
    -p 27015:27015/udp \
    -p 27015:27015 \
    -p 27005:27005/udp \
    -e ARGS="+host_workshop_collection 382793424" \
    -it \
    ceifa/gmod-server

This will start a server named my server in production mode pointing to a local addons with a custom gamemode:

docker run \
    -p 27015:27015/udp \
    -p 27015:27015 \
    -p 27005:27005/udp \
    -v $PWD/addons:/home/gmod/server/garrysmod/addons \
    -v $PWD/gamemodes:/home/gmod/server/garrysmod/gamemodes \
    -e HOSTNAME="my server" \
    -e PRODUCTION=1 \
    -e GAMEMODE=darkrp \
    -it \
    ceifa/gmod-server

You can create a new docker image using this image as base too:

FROM ceifa/gmod-server:latest

COPY ./deathrun-addons /home/gmod/server/garrysmod/addons

ENV NAME="Lory | Deathrun ~ Have fun!"
ENV ARGS="+host_workshop_collection 382793424"
ENV MAP="deathrun_atomic_warfare"
ENV GAMEMODE="deathrun"
ENV MAXPLAYERS="24"

More examples can be found at my real use case github repository.

Health Check

This image contains a health check to continually ensure the server is online. That can be observed from the STATUS column of docker ps

CONTAINER ID        IMAGE                    COMMAND                 CREATED             STATUS                    PORTS                                                                                     NAMES
e9c073a4b262        ceifa/gmod-server        "/home/gmod/start.sh"   21 minutes ago      Up 21 minutes (healthy)   0.0.0.0:27005->27005/tcp, 27005/udp, 0.0.0.0:27015->27015/tcp, 0.0.0.0:27015->27015/udp   distracted_cerf

You can also query the container's health in a script friendly way:

> docker container inspect -f "{{.State.Health.Status}}" e9c073a4b262
healthy

License

This image is under the MIT license.

TODO:

Add multi-stages to build

ceifa/garrysmod-docker