Add semver validation

Author: sualeh

.github/workflows/release.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
   push:
     tags:
-      - v[0-9]+\.[0-9]+\.[0-9]+(-[A-Z])?
+      - 'v*'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -16,6 +16,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
+# VALIDATE TAGS
+    - id: validate-semver
+      name: Validate tag against semantic versioning
+      if: startsWith(github.ref, 'refs/tags/')
+      shell: bash
+      run: |
+        SEMVER_PATTERN="^refs/tags/v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?(\+[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$"
+        if [[ ! $GITHUB_REF =~ $SEMVER_PATTERN ]]
+          then
+            echo "Tag $GITHUB_REF does not follow semantic versioning"
+            exit 1
+          fi
+
 # SETUP BUILD ENVIRONMENT
     - id: prepare-maven-build
       name: Prepare Maven build