Improve release tag regex (#122)

Matches changes made in https://github.com/apple/container/pull/187 by
@Thedarkmatter10

Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>

.github/workflows/release.yml

@@ -3,7 +3,7 @@ name: Release containerization
 on: 
   push: 
     tags:
-      - "[0-9]+.[0-9]+.[0-9]+"
+      - "[0-9]+\\.[0-9]+\\.[0-9]+"
 
 jobs: 
   containerization:
@@ -16,7 +16,9 @@ jobs:
       contents: read
       packages: write
       pages: write
+
   deployDocs:
+    if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     needs: containerization
     permissions:
@@ -30,7 +32,9 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4
+
   release: 
+    if: startsWith(github.ref, 'refs/tags/')
     name: Publish release
     timeout-minutes: 30
     needs: containerization
@@ -42,7 +46,7 @@ jobs:
       - name: Create release
         uses: softprops/action-gh-release@v2
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ github.token }}
           name: ${{ github.ref_name }}-prerelease
           draft: true
           make_latest: false