All of the space engineers dedicated server on wine containers I found wouldn't build, and I embarked on a journey to create my own.

• Wine 6
• Debian Buster
• Installs default star system world on first run
• Automatically updates <LoadWorld> element in SpaceEngineers-Dedicated.cfg
• Supports plugins.
• Image built and available on dockerhub
• Easy to implement offsite backups, just copy everything in ./appdata/space-engineers/config with your favorite backup tool.
• Reduced container size (~4gb decompressed).

Thank you to:

• 7thCore for 7thCore/sesrv-script
• Devidian for advancing the docker implementation to a working state!
• @Inflex for
• @Tsu, @Aedis, @ebbit, @data, @ReAn, @BloodyIron, @spawnAjak for all around helping when testing and getting this started
• @UseAfterFreee, @woeisme, @kennethx, @MarkL4YG, @BaIthamel, @Tetrino, @Teacay1, @Fischchen, @whodat, @msansen, @IndexOutOfMJ for opening issues or contributing to an issue conversation that improved the repo.

• docker
• docker-compose (recommended, not required to run container)
• unzip

• You can copy the entire contents of ./appdata/space-engineers/config to make a backup, including the SpaceEngineers-Dedicated.cfg file.
• The ./start script will start the server using docker-compose in detached mode, and then attaches to the log output. You can press ctrl+c to detach from the logs and keep the server running.
• If you are running plugins, the first time your run this, check your SpaceEngineers-Dedicated.cfg file for the Plugins element. If it spans multiple lines, you must replace it with <Plugins />, exactly like that. The server will query ./appdata/space-engineers/config/Plugins and update the config file as needed from then on.
• If you start the docker container without placing SpaceEngineers-Dedicated.cfg in the correct location, docker will create an empty folder where it should be. The container won't run until you stop the container, delete the empty SpaceEngineers-Dedicated.cfg folder, and replace it with the actual file.

• Clone this repo with git clone https://github.com/mmmaxwwwell/space-engineers-dedicated-docker-linux.git.
• Change directory into the cloned repo with cd space-engineers-dedicated-docker-linux.
• Run the start script with ./start. This will initialize the ./appdata folder, unzip an empty star system from star-system.zip and start the server.

From this directory run :

docker run --restart always -p "27016:27016/udp" \
  -v $(pwd)/appdata/space-engineers/config/World:/appdata/space-engineers/World\
  -v $(pwd)/appdata/space-engineers/bins/SpaceEngineersDedicated:/appdata/space-engineers/SpaceEngineersDedicated\
  -v $(pwd)/appdata/space-engineers/bins/steamcmd:/home/se/.steam\
  -v $(pwd)/appdata/space-engineers/config/SpaceEngineers-Dedicated.cfg:/appdata/space-engineers/SpaceEngineersDedicated/SpaceEngineers-Dedicated.cfg\
  mmmaxwwwell/space-engineers-dedicated-docker-linux:latest 

SpaceEngineersDedicated contains the dedicated server files
steamcmd contains steamcmd
config contains all the user configurable files for the game instance
World contains the world files

appdata
└── space-engineers
    ├── bins
    │   ├── SpaceEngineersDedicated 
    │   └── steamcmd 
    └── config 
        ├── SpaceEngineers-Dedicated.cfg
        └── World
            ├── Alien-291759539d120000.vx2
            ├── EarthLike-1779144428d120000.vx2
            ├── Europa-595048092d19000.vx2
            ├── Mars-2044023682d120000.vx2
            ├── Moon-1353915701d19000.vx2
            ├── SANDBOX_0_0_0_.sbs
            ├── Sandbox.sbc
            ├── Sandbox_config.sbc
            ├── Titan-2124704365d19000.vx2
            ├── Triton-12345d80253.vx2
            └── thumb.jpg