Improved automated chart versioning (#609)

<MAJOR>.<MINOR>.<NEXT_PATCH>-<TIMESTAMP>-<SHORT_SHA>

Author: asergeant01

.github/workflows/publish-chart.yml

@@ -35,6 +35,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
 
       - name: Set up Helm
         uses: azure/setup-helm@v4
@@ -44,15 +46,28 @@ jobs:
       - name: Determine chart version
         id: chart_version
         run: |
-          if [[ "${{ github.event_name }}" == "push" && "${{ github.ref }}" == "refs/heads/main" ]]; then
-            # Use SHA for main branch
-            CHART_VERSION="0.0.0-$(echo ${{ github.sha }} | cut -c1-7)"
-          elif [[ "${{ github.event_name }}" == "push" && "${{ github.ref }}" =~ ^refs/tags/v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+          if [[ "${{ github.event_name }}" == "push" && "${{ github.ref }}" =~ ^refs/tags/v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
             # Use tag version (strip 'v' prefix)
             CHART_VERSION="${GITHUB_REF#refs/tags/v}"
           else
-            # Use PR SHA for dry run
-            CHART_VERSION="0.0.0-$(echo ${{ github.sha }} | cut -c1-7)"
+            # Get the latest tag
+            LATEST_TAG=$(git describe --tags --abbrev=0 --match 'v[0-9]*.[0-9]*.[0-9]*' 2>/dev/null || echo "v0.0.0")
+            # Strip 'v' prefix
+            VERSION="${LATEST_TAG#v}"
+            # Remove prerelease/build metadata (everything after '-' or '+')
+            BASE_VERSION="${VERSION%%-*}"
+            BASE_VERSION="${BASE_VERSION%%+*}"
+            # Parse base version
+            MAJOR=$(echo $BASE_VERSION | cut -d. -f1)
+            MINOR=$(echo $BASE_VERSION | cut -d. -f2)
+            PATCH=$(echo $BASE_VERSION | cut -d. -f3)
+            # Increment patch version
+            NEXT_PATCH=$((PATCH + 1))
+            # Get timestamp and short SHA
+            TIMESTAMP=$(date -u +%Y%m%d%H%M%S)
+            SHORT_SHA=$(echo ${{ github.sha }} | cut -c1-7)
+            # Format: major.minor.patch+1-timestamp-sha
+            CHART_VERSION="${MAJOR}.${MINOR}.${NEXT_PATCH}-${TIMESTAMP}-${SHORT_SHA}"
           fi
           echo "version=$CHART_VERSION" >> $GITHUB_OUTPUT