launch.sh

#!/bin/bash

if [ ! -e eula.txt ]; then
  if [ "$EULA" != "" ]; then
    echo "# Generated via Docker on $(date)" > eula.txt
    echo "eula=$EULA" >> eula.txt
  else
    echo ""
    echo "Please accept the Minecraft EULA at"
    echo "  https://account.mojang.com/documents/minecraft_eula"
    echo "by adding the following immediately after 'docker run':"
    echo "  -e EULA=TRUE"
    echo ""
    exit 1
  fi
fi

if [ ! -e server.properties ]; then
  cp /server.properties .
fi

# If supplied with a URL for a world, download it and unpack
if [[ "$WORLD" ]]; then
case "X$WORLD" in
  X[Hh][Tt][Tt][Pp]*)
    echo "Downloading world..."
    echo "$WORLD"
    wget -q -O - "$WORLD" > world.zip
    echo "Unzipping world..."
    unzip -q world.zip
    rm -f world.zip
    if [ ! -d world ]; then
      echo World directory not found
      for i in */level.dat; do
        if [ -f "$i" ]; then
          d=`dirname "$i"`
          echo Renaming world directory from $d
          mv -f "$d" world
        fi
      done
    fi
    ;;
  *)
    echo "Invalid URL given for world: Must be HTTP or HTTPS and a ZIP file"
    ;;
esac
fi

# If supplied with a URL for a modpack (simple zip of jars), download it and unpack
if [[ "$MODPACK" ]]; then
case "X$MODPACK" in
  X[Hh][Tt][Tt][Pp]*[Zz][iI][pP])
    echo "Downloading modpack..."
    echo "$MODPACK"
    wget -q -O /tmp/modpack.zip "$MODPACK"
    mkdir -p mods
    unzip -d mods /tmp/modpack.zip
    rm -f /tmp/modpack.zip
    ;;
  *)
    echo "Invalid URL given for modpack: Must be HTTP or HTTPS and a ZIP file"
    ;;
esac
fi

if [ -n "$ICON" -a ! -e server-icon.png ]; then
  echo "Using server icon from $ICON..."
  # Not sure what it is yet...call it "img"
  wget -q -O /tmp/icon.img $ICON
  specs=$(identify /tmp/icon.img | awk '{print $2,$3}')
  if [ "$specs" = "PNG 64x64" ]; then
    mv /tmp/icon.img server-icon.png
  else
    echo "Converting image to 64x64 PNG..."
    convert /tmp/icon.img -resize 64x64! server-icon.png
  fi
fi

# If any modules have been provided, copy them over
[ -d mods ] || mkdir mods
for m in /mods/*.jar
do
  if [ -f "$m" ]; then
    echo Copying mod `basename "$m"`
    cp -f "$m" mods
  fi
done

[ -d config ] || mkdir config
for c in /config/*
do
  if [ -f "$c" ]; then
    echo Copying configuration `basename "$c"`
    cp -rf "$c" config
  fi
done

exec java $JVM_OPTS -jar "/server.jar"