feat(operator): several updates (#806)

- prepare to switch from `master` to `main`
- avoid to run workflow in case is not needed
- add a way to bump the lts via make
- use latest jenkins lts 2.387.1
- add the docker labels
- update base plugins
- fix #797 
- Add more tests with bats
- Update base plugin to latest version
- Temporary revert #807 
- Better nightly job

backup/pvc/Dockerfile

@@ -1,4 +1,12 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
+
+LABEL maintainer="Jenkins Kubernetes Operator Community" \
+      org.opencontainers.image.authors="Jenkins Kubernetes Operator Community" \
+      org.opencontainers.image.title="backup-pvc" \
+      org.opencontainers.image.description="Jenkins Operator Backup img via pvc volume" \
+      org.opencontainers.image.url="quay.io/jenkins-kubernetes-operator/backup-pvc" \
+      org.opencontainers.image.source="https://github.com/jenkinsci/kubernetes-operator/tree/master/backup/pvc" \
+      org.opencontainers.image.base.name="debian:bullseye-slim"
 
 ARG UID
 ARG GID

backup/pvc/VERSION.txt

@@ -1 +1 @@
-v0.2.1
+v0.2.2

backup/pvc/bin/restore.sh

@@ -7,9 +7,9 @@ set -eo pipefail
 [[ -z "${JENKINS_HOME}" ]] && echo "Required 'JENKINS_HOME' env not set" && exit 1;
 
 backup_number=$1
-echo "Running restore backup"
+echo "Running restore backup with backup number #${backup_number}"
 
 tar -C ${JENKINS_HOME} -zxf "${BACKUP_DIR}/${backup_number}.tar.gz"
 
 echo Done
-exit 0
+exit 0