push fixed version images

Jenkinsfile

@@ -98,6 +98,17 @@ pipeline {
                                         --push \
                                         .""",
                            label: 'Build Docker image'
+
+                        if (env.BRANCH_NAME == 'master') {
+                            if (env.VERSION ==~ '-\\d+-g[a-f0-9]{7}') {
+                                env.FIXED_VERSION = 'dev'
+                            } else {
+                                env.FIXED_VERSION = 'stable'
+                            }
+                            sh script: """docker buildx imagetools create \
+                                            -t git.esoko.eu/esoko/rvr:${env.FIXED_VERSION} \
+                                            git.esoko.eu/esoko/rvr:${env.VERSION}"""
+                        }
                     }
                 }
             }