Switch to main branch (#439)

* switch to main branch as the default

* don't build and deploy if only nix files are changed

* fixup nix-check workflow

Author: skykanin

.github/workflows/alert-deploy.yaml

@@ -4,7 +4,7 @@ run-name: Deploy alerts for Dapla Ctrl to test and prod
 on:
   push:
     branches:
-      - develop
+      - main
     paths:
       - '.nais/alerts.yaml'
       - '.github/workflows/alert-deploy.yaml'

.github/workflows/build-deploy-app.yaml

@@ -3,10 +3,13 @@ on:
     types: [published]
   push:
     branches:
-      - develop
+      - main
     paths-ignore:
       - '**/*.md'
       - '.gitignore'
+      # No need to build and deploy if only the nix development environment changes
+      - 'flake.nix'
+      - 'flake.lock'
 
 env:
   REGISTRY: europe-north1-docker.pkg.dev/${{ vars.NAIS_MANAGEMENT_PROJECT_ID }}/dapla-stat/dapla-ctrl

.github/workflows/nix-check.yaml

@@ -2,7 +2,11 @@ name: Nix tests
 
 on:
   pull_request:
-    paths: '**/*.nix'
+    paths:
+      - '**/*.nix'
+
+permissions:
+  contents: read
 
 jobs:
   nix-tests: