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Docker image for a PaperMC Minecraft server with lazymc.
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README.md

PaperMC Docker with lazymc

Linux Docker image for a PaperMC Minecraft server managed by lazymc.

PaperMC is an optimized Minecraft server with plugin support. lazymc lets the server sleep while idle and wakes it when a player connects.

This image does not redistribute Minecraft or Paper server files. It downloads Paper and lazymc from their official release sources at container startup.

Current Defaults

  • Base image: eclipse-temurin:25-jre-noble
  • Paper download service: https://fill.papermc.io/v3
  • Paper channel: STABLE
  • lazymc: latest GitHub release
  • Supported image platforms: linux/amd64, linux/arm64

As of June 7, 2026, Paper's actively supported lines are:

  • 26.1.2, latest stable build 69, Java minimum 25
  • 1.21.11, latest stable build 132, Java minimum 21

The latest, java25, and temurin25 image tags use Java 25 so the default latest Paper line works. The java21 and temurin21 tags default to MC_VERSION=1.21.11 for the older supported Paper line.

Paper 26.1 changed world storage layout. Back up existing worlds before moving to 26.1 or newer. After upgrading a world to 26.1, do not expect to downgrade it back to an older Paper version.

Usage

Running this image indicates agreement to the Minecraft EULA.

docker run \
  --name papermc \
  -p 25565:25565 \
  -v papermc:/papermc \
  crbanman/papermc-lazymc

For production servers, pin MC_VERSION and PAPER_BUILD. The default latest values can update the server on container restart.

docker run \
  --name papermc \
  -p 25565:25565 \
  -v papermc:/papermc \
  -e MC_VERSION="26.1.2" \
  -e PAPER_BUILD="69" \
  -e MC_RAM="4G" \
  crbanman/papermc-lazymc

Docker Options

  • -p <host-port>:25565: publish the Minecraft server port.
  • -p <host-port>:25575: publish RCON if you enable it in server.properties.
  • -v <volume-or-path>:/papermc: persist server files.
  • -d: run detached.
  • -it: keep an interactive console available for docker attach.
  • --restart on-failure: restart if the server process crashes.
  • --name <name>: set a stable container name.

Environment Variables

Name Default Description
MC_VERSION latest Paper/Minecraft version. latest uses the newest Paper version from the Fill v3 API.
PAPER_BUILD latest Paper build number. latest uses the newest build matching PAPER_CHANNEL.
PAPER_CHANNEL STABLE Paper release channel to use when PAPER_BUILD=latest.
LAZYMC_VERSION latest lazymc GitHub release tag, for example v0.2.11.
MC_RAM empty Sets both -Xms and -Xmx, for example 4G or 4096M.
JAVA_OPTS empty Extra Java options appended to the server command.
PAPER_USER_AGENT project default User-Agent sent to Paper's download service. Change this for derived images.

Build Args

Name Default Description
JAVA_VERSION 25 Eclipse Temurin Java major version used in the base image.
DEFAULT_MC_VERSION latest Baked-in default for MC_VERSION.

Files

Server files live in /papermc. Use a Docker volume or host bind mount so worlds, plugins, configs, and the generated lazymc.toml persist across container restarts.

Links