Add CI support for no-galera installation of workers

To solve chicken/egg problem of providing galera
workers to build the galera-4 package.

.github/workflows/bbw_build_container_rhel.yml

@@ -73,6 +73,9 @@ jobs:
         run: |
           cd ${{ env.WORKDIR }}
           cat ${{ matrix.dockerfile }} qpress.Dockerfile buildbot-worker.Dockerfile >$GITHUB_WORKSPACE/Dockerfile
+          if [ "${{ matrix.nogalera }}" == true ]; then
+            sed -i -e '/ci.mariadb.org\/galera/d' -e '/WSREP_PROVIDER/d' -e '/galera-4/d' $GITHUB_WORKSPACE/Dockerfile
+          fi
           cp -r qpress $GITHUB_WORKSPACE
       - name: Check Dockerfile with hadolint
         run: |

.github/workflows/bbw_build_container_template.yml

@@ -67,6 +67,9 @@ jobs:
           cd ${{ env.WORKDIR }}
           cat ${{ inputs.dockerfile }} qpress.Dockerfile buildbot-worker.Dockerfile >$GITHUB_WORKSPACE/Dockerfile
           cp -r qpress $GITHUB_WORKSPACE
+          if [ "${{ inputs.nogalera }}" == true ]; then
+            sed -i -e '/ci.mariadb.org\/galera/d' -e '/galera-4/d' -e '/WSREP_PROVIDER/d' $GITHUB_WORKSPACE/Dockerfile
+          fi
 
       - name: Copy files on runner
         if: ${{ inputs.files }}
@@ -78,8 +81,7 @@ jobs:
             done
 
       - name: No wsrep on 32 bit platforms
-        if: >
-          (contains(inputs.platforms, 'linux/386'))
+        if: contains(inputs.platforms, 'linux/386')
         run: |
           sed -i -e '/WSREP_PROVIDER/d' $GITHUB_WORKSPACE/Dockerfile
       - name: Check Dockerfile with hadolint