Add GHA for tagging/creating releases and stale issues/PRs (#788)

* Add GHA for tagging/creating releases and stale issues/PRs

* Move build process to master

.github/workflows/delete-untagged.yml

@@ -21,5 +21,5 @@ jobs:
           owner: omec-project
           name: upf-epc/${{ matrix.package }}
           # NOTE: using Personal Access Token
-          token: ${{ secrets.CR_PAT }}
+          token: ${{ secrets.GH_OMEC_PAT }}
           untagged-keep-latest: 1

.github/workflows/master.yml

@@ -13,6 +13,25 @@ on:
       - master
 
 jobs:
+  build:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: 'go.mod'
+
+      - name: Generate protobuf
+        run: make pb
+
+      - name: Build the BESS-UPF Docker image
+        run: DOCKER_TARGETS=bess make docker-build
+
+      - name: Build the PFCP Agent Docker image
+        run: DOCKER_TARGETS=pfcpiface make docker-build
+
   lint:
     name: lint
     runs-on: ubuntu-latest