fix(ci): conditional syntax & others

.github/workflows/main.yml

@@ -42,7 +42,7 @@ jobs:
   publish:
     name: Publish container image
     needs: pretest
-    if: ${{ github.event_name != 'pull_request' }}
+    if: github.event_name != 'pull_request'
     runs-on: ubuntu-latest
 
     steps:
@@ -96,9 +96,9 @@ jobs:
         run: wget https://github.com/official-human/nonicons-font/raw/main/PKGBUILD
 
       - name: Update action.yml to use edge tagged container image
-        if: ${{ github.ref != 'refs/tags/*' }}
+        if: github.ref == 'refs/heads/main'
         run: |
-          sed -i 's/.*image\:.*/  image\: \"ghcr.io\/${{ github.repository_owner }}\/${{ github.event.repository.name }}\:edge\"/' action.yml
+          sed -i 's/.*image\:.*/  image\: \"docker\:\/\/ghcr.io\/${{ github.repository_owner }}\/${{ github.event.repository.name }}\:edge\"/' action.yml
           cat action.yml
 
       - name: Running tests