Update OB Build Pipeline to Pass Build Tag as Var (#2011)

* adding release_tag functionality to support releasing by tag or commit

.pipelines/onebranch/pipeline.buildrp.official.yml

@@ -47,20 +47,6 @@ extends:
         suppressionSet: default
 
     stages:
-    - stage: Build_Docker_Image
-      jobs:
-      - job: Build_Docker_Image
-        pool:
-          type: docker
-          os: linux
-
-        variables:
-          ob_git_checkout: true
-
-        steps:
-        - template: .pipelines/onebranch/templates/template-buildrp-builddocker.yml@self
-
-
     - stage: Build_ARO
       jobs:
       - job: Build_ARO
@@ -72,3 +58,18 @@ extends:
 
         steps:
         - template: .pipelines/onebranch/templates/template-buildrp-buildaro.yml@self
+
+    - stage: Build_Docker_Image
+      dependsOn: Build_ARO
+      jobs:
+      - job: Build_Docker_Image
+        pool:
+          type: docker
+          os: linux
+
+        variables:
+          ob_git_checkout: true
+          release_tag: $[stageDependencies.Build_ARO.Build_ARO.outputs['buildaro.releasetag']]
+
+        steps:
+        - template: .pipelines/onebranch/templates/template-buildrp-builddocker.yml@self

.pipelines/onebranch/pipeline.buildrp.pullrequest.yml

@@ -47,20 +47,6 @@ extends:
         suppressionSet: default
 
     stages:
-    - stage: Build_Docker_Image
-      jobs:
-      - job: Build_Docker_Image
-        pool:
-          type: docker
-          os: linux
-
-        variables:
-          ob_git_checkout: true
-
-        steps:
-        - template: .pipelines/onebranch/templates/template-buildrp-builddocker.yml@self
-
-
     - stage: Build_ARO
       jobs:
       - job: Build_ARO
@@ -72,3 +58,18 @@ extends:
 
         steps:
         - template: .pipelines/onebranch/templates/template-buildrp-buildaro.yml@self
+
+    - stage: Build_Docker_Image
+      dependsOn: Build_ARO
+      jobs:
+      - job: Build_Docker_Image
+        pool:
+          type: docker
+          os: linux
+
+        variables:
+          ob_git_checkout: true
+          release_tag: $[stageDependencies.Build_ARO.Build_ARO.outputs['buildaro.releasetag']]
+
+        steps:
+        - template: .pipelines/onebranch/templates/template-buildrp-builddocker.yml@self

.pipelines/onebranch/templates/template-buildrp-buildaro.yml

@@ -5,6 +5,16 @@ steps:
     targetType: inline
     script: |
       export GOPATH=$(Agent.TempDirectory)
+      export TAG=$(git describe --exact-match 2>/dev/null)
+      export COMMIT=$(git rev-parse --short=7 HEAD)$([[ $(git status --porcelain) = "" ]] || echo -dirty)
+      if [ -z "$TAG" ];
+      then
+        export VERSION=${COMMIT}
+      else
+        export VERSION=${TAG}
+      fi
+      echo "Version: ${VERSION}"
+      echo "##vso[task.setvariable variable=releasetag;isOutput=true]${VERSION}"
       mkdir -p $(Agent.TempDirectory)/src/github.com/Azure/
       cp -rd $(Build.SourcesDirectory) $(Agent.TempDirectory)/src/github.com/Azure/ARO-RP
       cd $(Agent.TempDirectory)/src/github.com/Azure/ARO-RP
@@ -12,6 +22,7 @@ steps:
       mkdir -p $(ob_outputDirectory) 
       cp aro $(ob_outputDirectory)/aro
     workingDirectory: $(Build.SourcesDirectory)
+  name: buildaro
 - task: Bash@3
   displayName: 🕵️ Validate FIPS
   inputs:

.pipelines/onebranch/templates/template-buildrp-builddocker.yml

@@ -9,4 +9,4 @@ steps:
     saveImageToPath: aro-rp.tar
     buildkit: 1
     enable_network: true
-    build_tag: $(Build.SourceBranchName)
+    build_tag: $(release_tag)