Add arm64 image to docker.

[mshima]

• Fix jib plugin by creating a target folder (for logs) and changing ownership.
• Add additional arm64 platform.
• Add workflow that publishes both images (arm64/amd64) to GitHub containers.

Related to https://github.com/jhipster/jhipster-registry/issues/500

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[pascalgrimaud]

@mshima : is it ready to be merged ?

[mshima]

@mshima : is it ready to be merged ?

@pascalgrimaud yes.

[mshima]

We should remove Dockerfile to avoid confusion. The main method of generating docker image should be jib.

[pascalgrimaud]

Yes, Dockerfile at root, is a dead code now

[mshima]

I will take a look later to publish to docker hub at on release.