Make env.release_tag easy to configure in YAML

.github/workflows/build.yml

@@ -13,6 +13,12 @@ name: Build
 
 on: [push, pull_request]
 
+env:
+  # To which GitHub release tag should we upload artifacts.
+  # Can be "snapshot" or "vX.Y.Z" (latter when we make stable release).
+  release_tag: snapshot
+  #release_tag: vX.Y.Z
+
 defaults:
   run:
     shell: bash
@@ -134,15 +140,15 @@ jobs:
       env:
         GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       run: gh auth status
-    # Releases files in the "snapshot" release.
+    # Releases files in the GitHub release.
     - name: Release Artifacts
       if: ${{ github.ref == 'refs/heads/master' }}
-      run: gh release --repo castle-engine/castle-model-viewer upload snapshot --clobber *.zip *.tar.gz
+      run: gh release --repo ${{ github.repository }} upload ${{ env.release_tag }} --clobber *.zip *.tar.gz
       env:
         GH_TOKEN: ${{ github.token }}
 
   update-release-tag:
-    name: Update Release Tag (make snapshot tag point to the build commit on master branch)
+    name: Update Release Tag (make release tag point to the build commit on master branch)
     runs-on: ubuntu-latest
     needs: [release]
     steps:
@@ -151,6 +157,6 @@ jobs:
       if: ${{ github.ref == 'refs/heads/master' }}
       run: |
         # --force allows to overwrite previous tag
-        git tag --force snapshot
+        git tag --force ${{ env.release_tag }}
         # --force allows to push with overwritten tag
-        git push --force origin snapshot
+        git push --force origin ${{ env.release_tag }}