add valheim image

images/valheim/Dockerfile

@@ -0,0 +1,51 @@
+######## INSTALL ########
+
+# Set the base image
+FROM ubuntu:24.04
+
+# Set environment variables
+ENV USER root
+ENV HOME /root
+
+# Set working directory
+WORKDIR $HOME
+
+# Insert Steam prompt answers
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN echo steam steam/question select "I AGREE" | debconf-set-selections \
+ && echo steam steam/license note '' | debconf-set-selections
+
+# Update the repository and install SteamCMD
+ARG DEBIAN_FRONTEND=noninteractive
+RUN dpkg --add-architecture i386 \
+ && apt-get update -y \
+ && apt-get install -y --no-install-recommends ca-certificates locales steamcmd \
+ && rm -rf /var/lib/apt/lists/*
+
+# Add unicode support
+RUN locale-gen en_US.UTF-8
+ENV LANG 'en_US.UTF-8'
+ENV LANGUAGE 'en_US:en'
+
+# Create symlink for executable
+RUN ln -s /usr/games/steamcmd /usr/bin/steamcmd
+
+# Update SteamCMD and verify latest version
+RUN steamcmd +quit
+
+# Fix missing directories and libraries
+RUN mkdir -p $HOME/.steam \
+ && ln -s $HOME/.local/share/Steam/steamcmd/linux32 $HOME/.steam/sdk32 \
+ && ln -s $HOME/.local/share/Steam/steamcmd/linux64 $HOME/.steam/sdk64 \
+ && ln -s $HOME/.steam/sdk32/steamclient.so $HOME/.steam/sdk32/steamservice.so \
+ && ln -s $HOME/.steam/sdk64/steamclient.so $HOME/.steam/sdk64/steamservice.so
+
+# Add entrypoint script
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+
+ENV VALHEIM_SERVER_NAME="Valheim Server"
+ENV VALHEIM_WORLD_NAME="Dedicated"
+ENV VALHEIM_SERVER_PORT=2456
+
+# Set default command
+CMD ["/docker-entrypoint.sh"]

images/valheim/docker-entrypoint.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [ -z "$VALHEIM_SERVER_PORT" ]; then
+    echo "VALHEIM_SERVER_PORT must be set"
+    exit 1
+fi
+
+if [ -z "$VALHEIM_SERVER_NAME" ]; then
+    echo "VALHEIM_SERVER_NAME must be set"
+    exit 1
+fi
+
+if [ -z "$VALHEIM_SERVER_PASSWORD" ]; then
+    echo "VALHEIM_SERVER_PASSWORD must be set"
+    exit 1
+fi
+
+if [ -n "$VALHEIM_SERVER_PUBLIC" ]; then
+    _IS_PUBLIC=1
+else
+    _IS_PUBLIC=0
+fi
+
+
+if [ ! -f "/data/.installed" ]; then
+    echo "Installing Valheim server..."
+    /usr/bin/steamcmd +force_install_dir /data/valheim +login anonymous +app_update 896660 validate +exit
+    touch /data/.initialized
+else
+    echo "Updating Valheim server..."
+    /usr/bin/steamcmd +force_install_dir /data/valheim +login anonymous +app_update 896660 +quit
+fi
+
+
+echo "Starting Valheim server..."
+
+cd /data/valheim
+
+export LD_LIBRARY_PATH=./linux64:$LD_LIBRARY_PATH
+export SteamAppId=892970
+
+./valheim_server.x86_64 \
+    -name "$VALHEIM_SERVER_NAME" \
+    -port "$VALHEIM_SERVER_PORT" \
+    -world "$VALHEIM_WORLD_NAME" \
+    -password "$VALHEIM_SERVER_PASSWORD" \
+    -savedir "/data/saves" \
+    -public "${_IS_PUBLIC}"

images/valheim/image.conf

@@ -0,0 +1,4 @@
+[image]
+registry = ghcr.io
+repository = tmacro/img
+platforms = linux/amd64, linux/arm64