haskellfoundation#23 Make a site deployment per branch

Author: visortelle

.github/workflows/deploy.sh

@@ -18,7 +18,11 @@ slugify() {
 }
 
 deploy() {
-  git_branch=$(git branch --show-current)
+  if [[ ! -z "$GITHUB_REF_NAME" ]]; then
+    git_branch=$GITHUB_REF_NAME
+  else
+    git_branch=$(git branch --show-current)
+  fi
   echo "Current git branch is '${git_branch}'."
 
   git config user.name github-actions