fix: Uses charming actions workflow to publish the charm (#15)

.github/workflows/main.yaml

@@ -2,6 +2,10 @@ name: CI
 
 on:
   push:
+    branches: ["main"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["main"]
 
 jobs:
   lint-report:
@@ -52,7 +56,7 @@ jobs:
         run: tox -e integration
       - name: Archive Tested Charm
         uses: actions/upload-artifact@v3
-        if: ${{ github.ref_name == 'main' }}
+        if: ${{ github.event_name == 'push' }}
         with:
           name: tested-charm
           path: .tox/**/httpreq-acme-operator_ubuntu-22.04-amd64.charm
@@ -78,7 +82,7 @@ jobs:
       - unit-tests-with-coverage
       - integration-test
     runs-on: ubuntu-22.04
-    if: ${{ github.ref_name == 'main' }}
+    if: ${{ github.event_name == 'push' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -94,6 +98,8 @@ jobs:
         uses: canonical/charming-actions/[email protected]
         id: channel
       - name: Upload charm to Charmhub
-        env:
-          CHARMCRAFT_AUTH: "${{ secrets.CHARMHUB_TOKEN }}"
-        run: charmcraft upload ./httpreq-acme-operator_ubuntu-22.04-amd64.charm --release ${{ steps.channel.outputs.name }}
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: "${{ secrets.CHARMHUB_TOKEN }}"
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          channel: "${{ steps.channel.outputs.name }}"