ERROR FTB_MODPACK_VERSION_ID needs to be numeric

[P4sca1]

Image: itzg/minecraft-server:java16

Env:

"TYPE=FTBA",
"VERSION=1.17.1",
"FABRICVERSION=LATEST",
"FORGEVERSION=RECOMMENDED",
"FTB_MODPACK_ID=56",
"FTB_MODPACK_VERSION_ID=",
"CF_SERVER_MOD=",
"CUSTOM_SERVER=",
"USE_MODPACK_START_SCRIPT=true",
"INIT_MEMORY=1024M",
"MAX_MEMORY=3072M",
"USE_AIKAR_FLAGS=true",
"EULA=true",
"GUI=FALSE",
"OVERRIDE_SERVER_PROPERTIES=true",
"SERVER_IP=0.0.0.0",
"SERVER_PORT=25567",
"RCON_PORT=25577",
"QUERY_PORT=25567",
"ENABLE_QUERY=true",
"DIFFICULTY=easy",
"ENABLE_WHITELIST=false",
"ENFORCE_WHITELIST=false",
"ICON=",
"ENABLE_RCON=false",
"RCON_PASSWORD=",
"MAX_PLAYERS=20",
"MAX_WORLD_SIZE=29999984",
"ALLOW_NETHER=true",
"ANNOUNCE_PLAYER_ACHIEVEMENTS=true",
"ENABLE_COMMAND_BLOCK=false",
"FORCE_GAMEMODE=false",
"GENERATE_STRUCTURES=true",
"HARDCORE=false",
"SNOOPER_ENABLED=true",
"MAX_BUILD_HEIGHT=256",
"MAX_TICK_TIME=60000",
"SPAWN_ANIMALS=true",
"SPAWN_MONSTERS=true",
"SPAWN_NPCS=true",
"SPAWN_PROTECTION=16",
"VIEW_DISTANCE=10",
"SEED=",
"MODE=survival",
"MOTD=A Minecraft server powered by ips-hosting.com",
"PVP=true",
"LEVEL_TYPE=DEFAULT",
"GENERATOR_SETTINGS=",
"RESOURCE_PACK=",
"RESOURCE_PACK_SHA1=",
"LEVEL=world",
"ONLINE_MODE=true",
"ALLOW_FLIGHT=false",
"PATH=/opt/java/openjdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"LANG=en_US.UTF-8",
"LANGUAGE=en_US:en",
"LC_ALL=en_US.UTF-8",
"JAVA_VERSION=jdk-16.0.1+9",
"JAVA_HOME=/opt/java/openjdk",
"UID=1000",
"GID=1000",
"MEMORY=1G",
"SERVER_NAME=Dedicated Server",
"ENABLE_AUTOPAUSE=false",
"AUTOPAUSE_TIMEOUT_EST=3600",
"AUTOPAUSE_TIMEOUT_KN=120",
"AUTOPAUSE_TIMEOUT_INIT=600",
"AUTOPAUSE_PERIOD=10",
"AUTOPAUSE_KNOCK_INTERFACE=eth0"

Expected behaviour:
I expected it to use the latest version, because the env variable is empty.

Actual behaviour:
The server fails to start:

[init] Running as uid=1000 gid=1000 with /data as 'drwxrwxr-x 5 1000 1000 4096 Oct 21 08:09 /data'
[init] Resolved version given 1.17.1 into 1.17.1
[init] Resolving type given FTBA
[init] ERROR FTB_MODPACK_VERSION_ID needs to be numeric

[itzg]

The current code is expecting that variable to be undefined in that case, not an empty string. I can tweak that logic there.

[itzg]

I have pushed image updates that should now fix this.

[github-actions]

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[P4sca1]

I can confirm this issue has been fixed.