ci(forgejo): configure act-runner container image, registry host, and package permissions

.forgejo/workflows/build-push.yml

@@ -9,11 +9,19 @@ on:
     tags:
       - 'v*'
 
+# Grant permissions to push packages to Forgejo Container Registry and create releases
+permissions:
+  contents: write
+  packages: write
+
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
     container:
       image: catthehacker/ubuntu:act-latest
+    permissions:
+      contents: write
+      packages: write
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
@@ -62,6 +70,8 @@ jobs:
     runs-on: ubuntu-latest
     container:
       image: catthehacker/ubuntu:act-latest
+    permissions:
+      contents: write
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4