cwlf/mc-server

•Updated almost 5 years ago

Image

132

This docker image provides a Minecraft Server that will automatically download the latest stable version at startup. You can also run/upgrade to any specific version or the latest snapshot. See the Versions section below for more information.

Full docs available in Github⁠

To simply use the latest stable version, run

docker run -d -p 25565:25565 --name mc itzg/minecraft-server

where the standard server port, 25565, will be exposed on your host machine.

If you want to serve up multiple Minecraft servers or just use an alternate port, change the host-side port mapping such as

docker run -p 25566:25565 ...

will serve your Minecraft server on your host's port 25566 since the -p syntax is host-port:container-port.

Speaking of multiple servers, it's handy to give your containers explicit names using --name, such as

docker run -d -p 25565:25565 --name mc itzg/minecraft-server

With that you can easily view the logs, stop, or re-start the container:

docker logs -f mc
    ( Ctrl-C to exit logs action )

docker stop mc

docker start mc

Looking for a Bedrock Dedicated Server

For Minecraft clients running on consoles, mobile, or native Windows, you'll need to use this image instead:

itzg/minecraft-bedrock-server

Interacting with the server

RCON⁠ is enabled by default, so you can exec into the container to access the Minecraft server console:

docker exec -i mc rcon-cli

Note: The -i is required for interactive use of rcon-cli.

To run a simple, one-shot command, such as stopping a Minecraft server, pass the command as arguments to rcon-cli, such as:

docker exec mc rcon-cli stop

The -i is not needed in this case.

In order to attach and interact with the Minecraft server, add -it when starting the container, such as

docker run -d -it -p 25565:25565 --name mc itzg/minecraft-server

With that you can attach and interact at any time using

docker attach mc

and then Control-p Control-q to detach.

For remote access, configure your Docker daemon to use a tcp socket (such as -H tcp://0.0.0.0:2375) and attach from another machine:

docker -H $HOST:2375 attach mc

Unless you're on a home/private LAN, you should enable TLS access⁠.

EULA Support

Mojang now requires accepting the Minecraft EULA⁠. To accept add

    -e EULA=TRUE

such as

    docker run -d -it -e EULA=TRUE -p 25565:25565 --name mc itzg/minecraft-server

Attaching data directory to host filesystem

In order to readily access the Minecraft data, use the -v argument to map a directory on your host machine to the container's /data directory, such as:

docker run -d -v /path/on/host:/data ...

When attached in this way you can stop the server, edit the configuration under your attached /path/on/host and start the server again with docker start CONTAINERID to pick up the new configuration.

Versions

To use a different Minecraft version, pass the VERSION environment variable, which can have the value

LATEST (the default)
SNAPSHOT
or a specific version, such as "1.7.9"

For example, to use the latest snapshot:

docker run -d -e VERSION=SNAPSHOT ...

or a specific version:

docker run -d -e VERSION=1.7.9 ...

When using "LATEST" or "SNAPSHOT" an upgrade can be performed by simply restarting the container. During the next startup, if a newer version is available from the respective release channel, then the new server jar file is downloaded and used. NOTE: over time you might see older versions of the server jar remain in the /data directory. It is safe to remove those.

Running Minecraft server on different Java version

To use a different version of Java, please use a docker tag to run your Minecraft server.

Tag name	Description	Linux
latest	Default. Uses Java version 8 update 212	Alpine Linux
adopt13	Uses Java version 13 latest update	Alpine Linux
adopt11	Uses Java version 11 latest update	Alpine Linux
openj9	Uses Eclipse OpenJ9 JVM	Alpine Linux
openj9-nightly	Uses Eclipse OpenJ9 JVM testing builds	Alpine Linux
multiarch	Uses Java version 8 latest update	Debian Linux

For example, to use a Java version 13:

docker run --name mc itzg/minecraft-server:adopt13

Keep in mind that some versions of Minecraft server can't work on the newest versions of Java. Also, FORGE doesn't support openj9 JVM implementation.

Healthcheck

This image contains mc-monitor⁠ and uses its status command to continually check on the container's. That can be observed from the STATUS column of docker ps

CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                    PORTS                                 NAMES
b418af073764        mc                  "/start"            43 seconds ago      Up 41 seconds (healthy)   0.0.0.0:25565->25565/tcp, 25575/tcp   mc

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

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

Deployment Templates and Examples

Helm Charts

Examples

The examples directory⁠ also provides examples of deploying the itzg/minecraft-server Docker image.

Running a Forge Server

Enable Forge server mode by adding a -e TYPE=FORGE to your command-line. By default the container will run the RECOMMENDED version of Forge server⁠ but you can also choose to run a specific version with -e FORGEVERSION=10.13.4.1448.

$ docker run -d -v /path/on/host:/data -e VERSION=1.7.10 \
    -e TYPE=FORGE -e FORGEVERSION=10.13.4.1448 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

To use a pre-downloaded Forge installer, place it in the attached /data directory and specify the name of the installer file with FORGE_INSTALLER, such as:

$ docker run -d -v /path/on/host:/data ... \
    -e FORGE_INSTALLER=forge-1.11.2-13.20.0.2228-installer.jar ...

To download a Forge installer from a custom location, such as your own file repository, specify the URL with FORGE_INSTALLER_URL, such as:

$ docker run -d -v /path/on/host:/data ... \
    -e FORGE_INSTALLER_URL=http://HOST/forge-1.11.2-13.20.0.2228-installer.jar ...

In both of the cases above, there is no need for the VERSION or FORGEVERSION variables.

In order to add mods, you have two options.

Using the /data volume

This is the easiest way if you are using a persistent /data mount.

To do this, you will need to attach the container's /data directory (see "Attaching data directory to host filesystem”). Then, you can add mods to the /path/on/host/mods folder you chose. From the example above, the /path/on/host folder contents look like:

/path/on/host
├── mods
│   └── ... INSTALL MODS HERE ...
├── config
│   └── ... CONFIGURE MODS HERE ...
├── ops.json
├── server.properties
├── whitelist.json
└── ...

If you add mods while the container is running, you'll need to restart it to pick those up:

docker stop mc
docker start mc

Using separate mounts

This is the easiest way if you are using an ephemeral /data filesystem, or downloading a world with the WORLD option.

There are two additional volumes that can be mounted; /mods and /config.
Any files in either of these filesystems will be copied over to the main /data filesystem before starting Minecraft.

This works well if you want to have a common set of modules in a separate location, but still have multiple worlds with different server requirements in either persistent volumes or a downloadable archive.

Replacing variables inside configs

Sometimes you have mods or plugins that require configuration information that is only available at runtime. For example if you need to configure a plugin to connect to a database, you don't want to include this information in your Git repository or Docker image. Or maybe you have some runtime information like the server name that needs to be set in your config files after the container starts.

For those cases there is the option to replace defined variables inside your configs with environment variables defined at container runtime.

If you set the enviroment variable REPLACE_ENV_VARIABLES to TRUE the startup script will go thru all files inside your /data volume and replace variables that match your defined environment variables. Variables that you want to replace need to be wrapped inside ${YOUR_VARIABLE} curly brackets and prefixed with a dollar sign. This is the regular syntax for enviromment variables inside strings or config files.

Optionally you can also define a prefix to only match predefined enviroment variables.

ENV_VARIABLE_PREFIX="CFG_" <-- this is the default prefix

There are some limitations to what characters you can use.

Type	Allowed Characters
Name	`0-9a-zA-Z_-`
Value	`0-9a-zA-Z_-:/=?.+`

Variables will be replaced in files with the following extensions: .yml, .yaml, .txt, .cfg, .conf, .properties.

Here is a full example where we want to replace values inside a database.yml.


---
database:
  host: ${CFG_DB_HOST}
  name: ${CFG_DB_NAME}
  password: ${CFG_DB_PASSWORD}

This is how your docker-compose.yml file could look like:

version: "3"
# Other docker-compose examples in /examples

services:
  minecraft:
    image: itzg/minecraft-server
    ports:
      - "25565:25565"
    volumes:
      - "mc:/data"
    environment:
      EULA: "TRUE"
      ENABLE_RCON: "true"
      RCON_PASSWORD: "testing"
      RCON_PORT: 28016
      # enable env variable replacement
      REPLACE_ENV_VARIABLES: "TRUE"
      # define an optional prefix for your env variables you want to replace
      ENV_VARIABLE_PREFIX: "CFG_"
      # and here are the actual variables
      CFG_DB_HOST: "http://localhost:3306"
      CFG_DB_NAME: "minecraft"
      CFG_DB_PASSWORD: "ug23u3bg39o-ogADSs"
    restart: always
  rcon:
    image: itzg/rcon
    ports:
      - "4326:4326"
      - "4327:4327"
    volumes:
      - "rcon:/opt/rcon-web-admin/db"

volumes:
  mc:
  rcon:

Running a Bukkit/Spigot server

Enable Bukkit/Spigot server mode by adding a -e TYPE=BUKKIT -e VERSION=1.8 or -e TYPE=SPIGOT -e VERSION=1.8 to your command-line.

docker run -d -v /path/on/host:/data \
    -e TYPE=SPIGOT -e VERSION=1.8 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

If you are hosting your own copy of Bukkit/Spigot you can override the download URLs with:

-e BUKKIT_DOWNLOAD_URL=
-e SPIGOT_DOWNLOAD_URL=

You can build spigot from source by adding -e BUILD_FROM_SOURCE=true

NOTE: to avoid pegging the CPU when running Spigot, you will need to pass --noconsole at the very end of the command line and not use -it. For example,

docker run -d -v /path/on/host:/data \
    -e TYPE=SPIGOT -e VERSION=1.8 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server --noconsole

You can install Bukkit plugins in two ways...

Using the /data volume

This is the easiest way if you are using a persistent /data mount.

To do this, you will need to attach the container's /data directory (see "Attaching data directory to host filesystem”). Then, you can add plugins to the /path/on/host/plugins folder you chose. From the example above, the /path/on/host folder contents look like:

/path/on/host
├── plugins
│   └── ... INSTALL PLUGINS HERE ...
├── ops.json
├── server.properties
├── whitelist.json
└── ...

If you add plugins while the container is running, you'll need to restart it to pick those up:

docker stop mc
docker start mc

Using separate mounts

This is the easiest way if you are using an ephemeral /data filesystem, or downloading a world with the WORLD option.

There is one additional volume that can be mounted; /plugins.
Any files in this filesystem will be copied over to the main /data/plugins filesystem before starting Minecraft.

This works well if you want to have a common set of plugins in a separate location, but still have multiple worlds with different server requirements in either persistent volumes or a downloadable archive.

Running a PaperSpigot server

Enable PaperSpigot server mode by adding a -e TYPE=PAPER -e VERSION=1.9.4 to your command-line.

docker run -d -v /path/on/host:/data \
    -e TYPE=PAPER -e VERSION=1.9.4 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

NOTE: to avoid pegging the CPU when running PaperSpigot, you will need to pass --noconsole at the very end of the command line and not use -it. For example,

docker run -d -v /path/on/host:/data \
    -e TYPE=PAPER -e VERSION=1.9.4 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server --noconsole

If you are hosting your own copy of PaperSpigot you can override the download URL with:

-e PAPER_DOWNLOAD_URL=

You can install Bukkit plugins in two ways...

An example compose file is provided at examples/docker-compose-paper.yml.

Using the /data volume

This is the easiest way if you are using a persistent /data mount.

/path/on/host
├── plugins
│   └── ... INSTALL PLUGINS HERE ...
├── ops.json
├── server.properties
├── whitelist.json
└── ...

If you add plugins while the container is running, you'll need to restart it to pick those up:

docker stop mc
docker start mc

Using separate mounts

This is the easiest way if you are using an ephemeral /data filesystem, or downloading a world with the WORLD option.

There is one additional volume that can be mounted; /plugins.
Any files in this filesystem will be copied over to the main /data/plugins filesystem before starting Minecraft.

Running a Server with a Feed-The-Beast (FTB) / CurseForge modpack

Enable this server mode by adding a -e TYPE=FTB or -e TYPE=CURSEFORGE to your command-line, but note the following additional steps needed...

You need to specify a modpack to run, using the FTB_SERVER_MOD or CF_SERVER_MOD environment variable. An FTB/CurseForge server modpack is available together with its respective client modpack on https://www.feed-the-beast.com⁠ under "Additional Files." Similar you can locate the modpacks for CurseForge at https://www.curseforge.com/minecraft/modpacks⁠ .

Now you can add a -e FTB_SERVER_MOD=name_of_modpack.zip to your command-line.

docker run -d -v /path/on/host:/data -e TYPE=FTB \
    -e FTB_SERVER_MOD=FTBPresentsSkyfactory3Server_3.0.6.zip \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

If you don't want to keep the pre-download modpacks separate from your data directory, then you can attach another volume at a path of your choosing and reference that. The following example uses /modpacks as the container path as the pre-download area:

docker run -d -v /path/on/host:/data -v /path/to/modpacks:/modpacks \
    -e TYPE=FTB \
    -e FTB_SERVER_MOD=/modpacks/FTBPresentsSkyfactory3Server_3.0.6.zip \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

Fixing "unable to launch forgemodloader"

If your server's modpack fails to load with an error like this⁠:

unable to launch forgemodloader

then you apply a workaround by adding this to the run invocation:

-e FTB_LEGACYJAVAFIXER=true

Using a client-made curseforge modpack

If you use something like CurseForge, you may end up creating/using modpacks that do not contain server mod jars. Instead, the CurseForge setup has manifest.json files, which will show up under /data/FeedTheBeast/manifest.json.

To use these packs you will need to:

Specify the manifest location with env var MANIFEST=/data/FeedTheBeast/manifest
Pick a relevant ServerStart.sh and potentially settings.cfg and put them in /data/FeedTheBeast

An example of the latter would be to use https://github.com/AllTheMods/Server-Scripts⁠ There, you'll find that all you have to do is put ServerStart.sh and settings.cfg into /data/FeedTheBeast, taking care to update settings.cfg to specify your desired version of minecraft and forge. You can do this in the cli with something like:

$ wget https://raw.githubusercontent.com/AllTheMods/Server-Scripts/master/ServerStart.sh
$ wget https://raw.githubusercontent.com/AllTheMods/Server-Scripts/master/settings.cfg
$ vim settings.cfg #update the forge version to the one you want. Your manifest.json will have it
$ chmod +x ServerStart.sh
$ docker run -itd --name derpcraft \
  -e MANIFEST=/data/FeedTheBeast/manifest.json \
  -v $PWD/ServerStart.sh:/data/FeedTheBeast/ServerStart.sh \
  -v $PWD/settings.cfg:/data/FeedTheBeast/settings.cfg \
  -e VERSION=1.12.2\
  -e TYPE=CURSEFORGE\
  -e CF_SERVER_MOD=https://minecraft.curseforge.com/projects/your_amazing_modpack/files/2670435/download\
  -p 25565:25565\
  -e EULA=TRUE\
  --restart=always\
  itzg/minecraft-server

Note the CF_SERVER_MOD env var should match the server version of the modpack you are targeting.

Running a SpongeVanilla server

Enable SpongeVanilla server mode by adding a -e TYPE=SPONGEVANILLA to your command-line. By default the container will run the latest STABLE version. If you want to run a specific version, you can add -e SPONGEVERSION=1.11.2-6.1.0-BETA-19 to your command-line.

docker run -d -v /path/on/host:/data -e TYPE=SPONGEVANILLA \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

You can also choose to use the EXPERIMENTAL branch. Just change it with SPONGEBRANCH, such as:

$ docker run -d -v /path/on/host:/data ... \
    -e TYPE=SPONGEVANILLA -e SPONGEBRANCH=EXPERIMENTAL ...

Running a Fabric Server

Enable Fabric server mode by adding a -e TYPE=FABRIC to your command-line. By default the container will run the latest version of Fabric server⁠ but you can also choose to run a specific version with -e FABRICVERSION=0.5.0.32.

$ docker run -d -v /path/on/host:/data -e VERSION=1.14.3 \
    -e TYPE=FABRIC -e FABRICVERSION=0.5.0.32 \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

To use a pre-downloaded Fabric installer, place it in the attached /data directory and specify the name of the installer file with FABRIC_INSTALLER, such as:

$ docker run -d -v /path/on/host:/data ... \
    -e FABRIC_INSTALLER=fabric-installer-0.5.0.32.jar ...

To download a Fabric installer from a custom location, such as your own file repository, specify the URL with FABRIC_INSTALLER_URL, such as:

$ docker run -d -v /path/on/host:/data ... \
    -e FORGE_INSTALLER_URL=http://HOST/fabric-installer-0.5.0.32.jar ...

In both of the cases above, there is no need for the VERSION or FABRICVERSION variables.

In order to add mods, you have two options.

Using the /data volume

This is the easiest way if you are using a persistent /data mount.

/path/on/host
├── mods
│   └── ... INSTALL MODS HERE ...
├── config
│   └── ... CONFIGURE MODS HERE ...
├── ops.json
├── server.properties
├── whitelist.json
└── ...

If you add mods while the container is running, you'll need to restart it to pick those up:

docker stop mc
docker start mc

Using separate mounts

This is the easiest way if you are using an ephemeral /data filesystem, or downloading a world with the WORLD option.

There are two additional volumes that can be mounted; /mods and /config.
Any files in either of these filesystems will be copied over to the main /data filesystem before starting Minecraft.

Running with a custom server JAR

If you would like to run a custom server JAR, set -e TYPE=CUSTOM and pass the custom server JAR via CUSTOM_SERVER. It can either be a URL or a container path to an existing JAR file.

If it is a URL, it will only be downloaded into the /data directory if it wasn't already. As such, if you need to upgrade or re-download the JAR, then you will need to stop the container, remove the file from the container's /data directory, and start again.

Force re-download of the server file

For VANILLA, FORGE, BUKKIT, SPIGOT, PAPER, CURSEFORGE, SPONGEVANILLA server types, set $FORCE_REDOWNLOAD to some value (e.g. 'true) to force a re-download of the server file for the particular server type. by adding a -e FORCE_REDOWNLOAD=true to your command-line.

For example, with PaperSpigot, it would look something like this:

docker run -d -v /path/on/host:/data \
    -e TYPE=PAPER -e VERSION=1.14.1 -e FORCE_REDOWNLOAD=true \
    -p 25565:25565 -e EULA=TRUE --name mc itzg/minecraft-server

Using Docker Compose

Rather than type the server options below, the port mappings above, etc every time you want to create new Minecraft server, you can now use Docker Compose⁠. Start with a docker-compose.yml file like the following:

minecraft-server:
  ports:
    - "25565:25565"

  environment:
    EULA: "TRUE"

  image: itzg/minecraft-server

  container_name: mc

  tty: true
  stdin_open: true
  restart: always

and in the same directory as that file run

docker-compose up -d

Now, go play...or adjust the environment section to configure this server instance.

Server configuration

By default the server configuration will be created and set based on the following environment variables, but only the first time the server is started. If the server.properties file already exists, the values in them will not be changed.

If you would like to override the server configuration each time the container starts up, you can set the OVERRIDE_SERVER_PROPERTIES environment variable like:

docker run -d -e OVERRIDE_SERVER_PROPERTIES=true ...

This will reset any manual configuration of the server.properties file, so if you want to make any persistent configuration changes you will need to make sure you have properly set the proper environment variables in your docker run command (described below).

Server name

The server name (e.g. for bungeecord) can be set like:

docker run -d -e SERVER_NAME=MyServer ...

Server port

The server port can be set like:

docker run

Docker Pull Command

docker pull cwlf/mc-server