Switching Java Version not working on Synology NAS

[TimonH-98]

Hello,
Iam trying to switch the JAVA Version on for a 1.12.2 Forge Server.
That are my settings (not working):

What should i do to get it running? My Server is crashing because its using the newest Java Version and not java8.
I also have tryed tipping in "java8" "java8-multiarch" and similar stuff

Thanks for the help!

[itzg]

You will need to use one of the Java 8 image tags rather than changing env vars

https://docker-minecraft-server.readthedocs.io/en/latest/versions/java/#running-minecraft-server-on-different-java-version

[itzg]

I'm personally not sure. Looking at these docs https://kb.synology.com/en-nz/DSM/help/Docker/docker_container?version=6 I can't see where image tags are selected. Maybe in that "Settings" button in the Registry section?

[TimonH-98]

nope. But i can import/export settings from a container:

{
"CapAdd" : null,
"CapDrop" : null,
"cmd" : "",
"cpu_priority" : 90,
"enable_publish_all_ports" : false,
"enable_restart_policy" : false,
"enable_service_portal" : null,
"enabled" : false,
"env_variables" : [
{
"key" : "PATH",
"value" : "/opt/java/openjdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
},
{
"key" : "JAVA_HOME",
"value" : "/opt/java/openjdk"
},
{
"key" : "LANG",
"value" : "en_US.UTF-8"
},
{
"key" : "LANGUAGE",
"value" : "en_US:en"
},
{
"key" : "LC_ALL",
"value" : "en_US.UTF-8"
},
{
"key" : "JAVA_VERSION",
"value" : "java8"
},
{
"key" : "TYPE",
"value" : "Forge"
},
{
"key" : "VERSION",
"value" : "1.12.2"
},
{
"key" : "EULA",
"value" : "true"
},
{
"key" : "UID",
"value" : "1000"
},
{
"key" : "GID",
"value" : "1000"
},
{
"key" : "MEMORY",
"value" : "8G"
}
],
"exporting" : false,
"id" : "19208d81f97a3ce2cd2c884856b331240b80bde08fc2a8a43e7f4c602a99f0bd",
"image" : "itzg/minecraft-server:latest",
"is_ddsm" : false,
"is_package" : false,
"links" : [],
"memory_limit" : 9407823872,
"name" : "TEST_1.12.2",
"network" : [
{
"driver" : "bridge",
"name" : "bridge"
}
],
"network_mode" : "bridge",
"port_bindings" : [
{
"container_port" : 25565,
"host_port" : 25569,
"type" : "tcp"
}
],
"privileged" : false,
"shortcut" : {
"enable_shortcut" : false,
"enable_status_page" : false,
"enable_web_page" : false,
"web_page_url" : ""
},
"use_host_network" : false,
"volume_bindings" : [
{
"host_volume_file" : "/docker/Minecraft/Test1.12.2",
"mount_point" : "/data",
"type" : "rw"
}
]
}

[itzg]

I guess change the "image" there then.

[TimonH-98]

I tryed that before. While importing i get the error that this image cant be found.

[TimonH-98]

ohhhh wait i found it! While downloading the image i can change the version and there are sooo many versions to download. I just need to find the java8 one
Thanks!