ci: fork shouldn't trigger deploy

Signed-off-by: Jérémie Drouet <jeremie.drouet@gmail.com>

.github/workflows/build-pr.yml

@@ -15,10 +15,10 @@ jobs:
       - name: build image
         run: docker build --build-arg=ENABLE_ARCHIVES=false --target=current -t documentation:latest .
       - name: copy static files
-        if: github.repository == 'docker/docker.github.io'
+        if: github.event.pull_request.head.repo.fork == false
         run: docker run -v ${PWD}:/output documentation:latest cp -r /usr/share/nginx/html /output/_site
       - uses: ./.github/actions/netlify-deploy
-        if: github.repository == 'docker/docker.github.io'
+        if: github.event.pull_request.head.repo.fork == false
         with:
           directory: _site
           netlify_token: ${{ secrets.NETLIFY_AUTH_TOKEN }}

.github/workflows/clean-pr.yml

@@ -9,7 +9,7 @@ jobs:
   remove-site-from-netlify:
     name: build
     runs-on: ubuntu-latest
-    if: github.repository == 'docker/docker.github.io'
+    if: github.event.pull_request.head.repo.fork == false
     steps:
       - uses: actions/checkout@v2
         with: