docker-minecraft-server/start-configuration

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

# shellcheck source=start-utils
. ${SCRIPTS:-/}start-utils

: "${EULA:=}"
: "${PROXY:=}"
: "${RCON_PASSWORD_FILE:=}"

shopt -s nullglob

isDebugging && set -x

#umask 002
export HOME=/data

log "Running as uid=$(id -u) gid=$(id -g) with /data as '$(ls -lnd /data)'"

if [ ! -e /data/eula.txt ]; then
  if ! isTrue "$EULA"; then
    log ""
    log "Please accept the Minecraft EULA at"
    log "  https://account.mojang.com/documents/minecraft_eula"
    log "by adding the following immediately after 'docker run':"
    log "  -e EULA=TRUE"
    log ""
    exit 1
  fi

  writeEula
fi


if [[ $PROXY ]]; then
    export http_proxy="$PROXY"
    export https_proxy="$PROXY"
    export JAVA_TOOL_OPTIONS+="-Djava.net.useSystemProxies=true"
    log "INFO: Giving proxy time to startup..."
    sleep 5
fi

if [[ $RCON_PASSWORD_FILE ]]; then
    log ""
    if [ ! -e ${RCON_PASSWORD_FILE} ]; then
	log "Initial RCON password file ${RCON_PASSWORD_FILE} does not seems to exist."
	log "Please ensure your configuration."
	log "If you are using Docker Secrets feature, please check this for further information: "
	log " https://docs.docker.com/engine/swarm/secrets"
	log ""
	exit 1
    else
	RCON_PASSWORD=$(cat ${RCON_PASSWORD_FILE})
	export RCON_PASSWORD
    fi
    log ""
fi

if ! which java > /dev/null; then
  log "Fixing PATH to include java"
  PATH="${PATH}:/opt/java/openjdk/bin"
fi

export VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json

case "X$VERSION" in
  X|XLATEST|Xlatest)
    if ! VANILLA_VERSION=$(get --json-path '$.latest.release' "$VERSIONS_JSON"); then
      log "ERROR: version lookup failed: $VANILLA_VERSION"
      exit 1
    fi
  ;;
  XSNAPSHOT|Xsnapshot)
    if ! VANILLA_VERSION=$(get --json-path '$.latest.snapshot' "$VERSIONS_JSON"); then
      log "ERROR: version lookup failed: $VANILLA_VERSION"
      exit 1
    fi
  ;;
  *)
    VANILLA_VERSION=$VERSION
  ;;
esac
export VANILLA_VERSION
log "Resolved version given ${VERSION} into ${VANILLA_VERSION}"

cd /data || exit 1

export ORIGINAL_TYPE=${TYPE^^}

if isTrue "${ENABLE_AUTOPAUSE}"; then
  ${SCRIPTS:-/}start-autopause
fi

log "Resolving type given ${TYPE}"
case "${TYPE^^}" in
  *BUKKIT|SPIGOT)
    exec ${SCRIPTS:-/}start-deployBukkitSpigot "$@"
  ;;

  PAPER)
    exec ${SCRIPTS:-/}start-deployPaper "$@"
  ;;

  FORGE)
    if versionLessThan 1.17; then
    log "**********************************************************************"
    log "WARNING: The image tag itzg/minecraft-server:java8 is recommended"
    log "         since some mods require Java 8"
    log "         Exception traces reporting ClassCastException: class jdk.internal.loader.ClassLoaders\$AppClassLoader"
    log "         can be fixed with java8"
    log "**********************************************************************"
    fi
    exec ${SCRIPTS:-/}start-deployForge "$@"
  ;;

  FABRIC)
    exec ${SCRIPTS:-/}start-deployFabric "$@"
  ;;

  FTBA)
    exec ${SCRIPTS:-/}start-deployFTBA "$@"
  ;;

  FTB|CURSEFORGE)
    log "**********************************************************************"
    log "WARNING: The image tag itzg/minecraft-server:java8 is recommended"
    log "         since some mods require Java 8"
    log "         Exception traces reporting ClassCastException: class jdk.internal.loader.ClassLoaders\$AppClassLoader"
    log "         can be fixed with java8"
    log "**********************************************************************"
    exec ${SCRIPTS:-/}start-deployCF "$@"
  ;;

  VANILLA)
    exec "${SCRIPTS:-/}start-deployVanilla" "$@"
  ;;

  SPONGEVANILLA)
    exec ${SCRIPTS:-/}start-deploySpongeVanilla "$@"
  ;;

  CUSTOM)
    exec ${SCRIPTS:-/}start-deployCustom "$@"
  ;;

  CURSE_INSTANCE)
    exec ${SCRIPTS:-/}start-validateCurseInstance "$@"
  ;;

  MAGMA)
    exec ${SCRIPTS:-/}start-deployMagma "$@"
  ;;

  MOHIST)
    exec ${SCRIPTS:-/}start-deployMohist "$@"
  ;;

  CATSERVER)
    exec ${SCRIPTS:-/}start-deployCatserver "$@"
  ;;

  PURPUR)
    exec ${SCRIPTS:-/}start-deployPurpur "$@"
  ;;

  AIRPLANE)
    exec ${SCRIPTS:-/}start-deployAirplane "$@"
  ;;

  CANYON)
    exec ${SCRIPTS:-/}start-deployCanyon "$@"
  ;;

  LIMBO)
    exec ${SCRIPTS:-/}start-deployLimbo "$@"
  ;;

  CRUCIBLE)
    log "**********************************************************************"
    log "WARNING: The image tag itzg/minecraft-server:java8 is recommended"
    log "         since some mods require Java 8"
    log "         Exception traces reporting ClassCastException: class jdk.internal.loader.ClassLoaders\$AppClassLoader"
    log "         can be fixed with java8"
    log "**********************************************************************"
    exec "${SCRIPTS:-/}start-deployCrucible" "$@"
  ;;

  *)
      log "Invalid type: '$TYPE'"
      log "Must be: VANILLA, FORGE, BUKKIT, SPIGOT, PAPER, FTBA (multiarch-only),"
      log "         CURSE_INSTANCE, CURSEFORGE, SPONGEVANILLA, PURPUR, CUSTOM,"
      log "         MAGMA, MOHIST, CATSERVER, AIRPLANE, CANYON, LIMBO, CRUCIBLE"
      exit 1
  ;;

esac