openjdk:17-alpine not compatible with Minecraft 1.18 due to it using the 17-ea version of Java

[ilektron]

https://github.com/mtoensing/Docker-Minecraft-PaperMC-Server/blob/cb710a7b160e81a7b41420cb5451d7dae008df05/Dockerfile#L4

Experienced a server crash due to the openjdk:17-alpine docker image not using the actual 17 release version of java at this time

[mtoensing]

See #33 Branch "1.18" or "beta" works fine. There is already a "1.18" image on Docker Hub:

docker pull marctv/minecraft-papermc-server:beta

Experimental test builds for 1.18. Use with extreme caution! Backups are mandatory.

[ilektron]

While I found it ran fine for some cases, I experienced a crash that turned out to be because the openjdk:17-alpine build uses the 17-ea version of Java which is missing some functions that were added for the actual 17 release version. The openjdk:17-alpine image is kind of in limbo right now, see http://jdk.java.net/17/

[mtoensing]

Do you have a better idea which base image is better? Maybe a Pull Request?

[ilektron]

I couldn't really find one at this time, so I built my own java docker image with version of java that Paper recommends, ilektron/paperjdk. I'll test stability today and if everything looks good I'll work on a pull request in the next day that just changes the jdk image.

[mtoensing]

Thanks @josxha

[josxha]

Hi @mtoensing, i just wanted to let you know that while the beta image on Docker hub uses now the release version of java 17, it seems that the 1.18 image still uses the incompatible early access java version.

See: https://hub.docker.com/layers/marctv/minecraft-papermc-server/1.18/images/sha256-1785408f5c500a76182daa93f08b73e9ad7d67d6061a7d5693ae5b41b9428af6?context=explore

[mtoensing]

Maybe a caching issue? It seems okay now

[RuofengX]

Still not work now. I am planning to use onenjdk-17 instead

[mtoensing]

Did you try the "latest" tag?

[josxha]

@RuofengX @mtoensing I agree, the image runs fine