Investigate approach with the entrypoint script injection to Che 7 images in the runtime to make the /etc/passwd writable for the arbitrary user

[ibuziuk]

Investigate approach with the entrypoint script injection to make the /etc/passwd writable for the arbitrary user:

if ! whoami &> /dev/null; then
  if [ -w /etc/passwd ]; then
    echo "${USER_NAME:-default}:x:$(id -u):0:${USER_NAME:-default} user:${HOME}:/sbin/nologin" >> /etc/passwd
  fi
fi
```


related to https://github.com/eclipse/che/issues/13454

[ibuziuk]

Draft PR with patching community images to make them openshift compatible:

• che #13454 Adding Che 7 java 11 community images with support of arbitrary user to make them OpenShift compatible eclipse-che/che-devfile-registry#24
• che #13454 Adding Che 7 community images with support of arbitrary user to make them OpenShift compatible eclipse-che/che-dockerfiles#248

[ibuziuk]

Initial PR with patched Dockerfile has been merged to devfile registry eclipse-che/che-devfile-registry#24

[ibuziuk]

PR for CI/CD setup - openshiftio/openshiftio-cico-jobs#1034

[ibuziuk]

@amisevsk hope you will be able to add all the missing images to https://github.com/eclipse/che-devfile-registry/tree/master/arbitrary-users-patch

and take care of nighly CI - eclipse-che/che#13837

[amisevsk]

Closing as done