ci: fix docker tag name for dependabot PRs

azure-pipelines.yml

@@ -369,6 +369,12 @@ stages:
         pool:
           vmImage: 'ubuntu-latest'
         steps:
+        - task: Bash@3
+          inputs:
+            targetType: 'inline'
+            script: |
+              set -x
+              echo '##vso[task.setvariable variable=branchName]$(echo "$(System.PullRequest.SourceBranch)" | sed "s/\//-/g")'
         - task: Docker@2
           inputs:
             containerRegistry: 'dockerhub'

proxy/azure-pipelines.yml

@@ -88,6 +88,12 @@ stages:
               buildType: 'current'
               artifactName: 'swagger_client'
               path: "proxy/pkg/"
+          - task: Bash@3
+            inputs:
+              targetType: 'inline'
+              script: |
+                set -x
+                echo '##vso[task.setvariable variable=branchName]$(echo "$(System.PullRequest.SourceBranch)" | sed "s/\//-/g")'
           - task: Docker@2
             inputs:
               containerRegistry: 'dockerhub'

web/azure-pipelines.yml

@@ -69,6 +69,12 @@ stages:
         pool:
           vmImage: 'ubuntu-latest'
         steps:
+        - task: Bash@3
+          inputs:
+            targetType: 'inline'
+            script: |
+              set -x
+              echo '##vso[task.setvariable variable=branchName]$(echo "$(System.PullRequest.SourceBranch)" | sed "s/\//-/g")'
         - task: Docker@2
           inputs:
             containerRegistry: 'dockerhub'