Rename Helm chart and Docker image and move to GHCR (#233)

This change does a few things, none of these are breaking.

It changes the registry from Docker Hub to GHCR, as we dont have the
same rate limiting issues with unauthenticated pulls.

It changes the release process to push the Helm chart as an OCI artifact
removing the need for GH pages.

It renames both the image and chart from kubernetes-operator to
netbird-operator. This name is cleaner and easier for people to
understand in a sea of Helm charts. Funnily enough this is not a
breaking change as the release name is used and not the chart name. So
in place upgrades just work.

Fixes #207

Signed-off-by: Philip Laine <philip.laine@gmail.com>

.github/workflows/release.yaml

@@ -3,15 +3,16 @@ on:
   push:
     tags:
       - "v*"
-    branches:
-      - main
+permissions:
+  contents: read
+  packages: write
+  id-token: write
+defaults:
+  run:
+    shell: bash
 jobs:
-  docker:
+  release:
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-      id-token: write
     steps:
       - name: Clone the code
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd #v6.0.2
@@ -19,23 +20,41 @@ jobs:
         uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c #v6.4.0
         with:
           go-version-file: go.mod
+      - name: Set up Docker
+        uses: docker/setup-docker-action@b2189fbf2a6592b51fee7cdd93ee2bfaeba733db #v5.1.0
+        with:
+          daemon-config: |
+            {
+              "features": {
+                "containerd-snapshotter": true
+              }
+            }
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd #v4.0.0
-      - name: Login to Docker Hub
+        with:
+          driver: docker
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 #v4.1.0
         with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_TOKEN }}
-      - name: Build image
-        id: build
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Prepare versions
+        id: prep
         run: |
+          IMG_TAG="${GITHUB_REF_NAME}"
           if [[ "${{ github.ref_type }}" == "tag" ]]; then
-            IMG_TAG="${GITHUB_REF_NAME#v}"
+            HELM_VERSION=${GITHUB_REF_NAME#v}
           else
-            IMG_TAG="${GITHUB_SHA::7}"
+            HELM_VERSION="0.0.0-${GITHUB_REF_NAME}"
           fi
-          IMG=$(make build-image-multiarch) || exit 1
-          echo "IMG=${IMG}" >> $GITHUB_OUTPUT
-      - name: Push image
+          echo "IMG_TAG=${IMG_TAG}" >> $GITHUB_OUTPUT
+          echo "HELM_VERSION=${HELM_VERSION}" >> $GITHUB_OUTPUT
+      - name: Build and push image
         run: |
-          docker push ${{ steps.build.outputs.IMG }}
+          IMG_REF=$(make build-image-multiarch IMG_REPOSITORY=${{ github.repository_owner }}/netbird-operator IMG_TAG=${{ steps.prep.outputs.IMG_TAG }}) || exit 1
+          docker push ${IMG_REF}
+      - name: Build and push Helm chart
+        run: |
+          helm package --app-version ${{ steps.prep.outputs.IMG_TAG }} --version ${{ steps.prep.outputs.HELM_VERSION }} charts/netbird-operator
+          helm push netbird-operator-${{ steps.prep.outputs.HELM_VERSION }}.tgz oci://ghcr.io/${{ github.repository_owner }}/helm-charts