megamek_docker

Megamek dedicated server dockerfile.
The image creates persistent volume for custom MegaMek assets.

Building image

You need to have Docker installed. Rename Dockerfile_* to Dockerfile according to MegaMek version you want to use The image can be built using the following command.
Replace the version number in the VERSION argument and in an image tag (megamek:0.49.14) with a version of MegaMek you want to run.
(note the dot at the end)

docker build --build-arg VERSION=0.49.14 -t megamek:0.49.14 .

Running container

You can run the container using the following command.
Replace host_port with a desired port for your server.
You can use the default port 2346.
Replace yourpassword with desired server password.
Make sure that you use the same image tag as in the build commands (eg. megamek:0.48.0)

docker run -e PASSWORD='yourpassword' -p host_port:2346 megamek:0.49.14

Adding custom assets

You can add custom maps and other assets to the mounted volume of the container.

Here is a quick and dirty way to find the path of the volume:
List all containers with megamek tag to find the ID - it will be the number at the beginning of the line.

docker ps | grep megamek

example output, in which 093b349b150a is the ID:

093b349b150a   megamek:0.49.14                       "/__cacert_entrypoin…"   13 minutes ago   Up 13 minutes          0.0.0.0:2346->2346/tcp, :::2346->2346/tcp                                                                                                                                                                                                            

Replace ID in the following command with the one you found in the previous command.

docker inspect ID | grep Source

example output, it states the path that you need to navigate to in order to add assets:

                "Source": "/var/lib/docker/volumes/39120f756485ee906566204ffa50f5006284a9b595a3fab1f417cf4774dbb14a/_data",