Support creating tags as a different user

- Add a `tag_as_user` input to override the git `user.name` used when creating tags
- Add a `tag_as_email` input to override the git `user.email` used when creating tags
- If a `github_token` has been provided, use that when pushing tags instead of the default Actions token

Using a different token for pushing the the tag allows the push to trigger other Actions.

Author: jordemort

README.md

@@ -19,8 +19,20 @@ specific lables (`bump:major`,`bump:minor`,`bump:patch`).
 inputs:
   default_bump_level:
     description: "Default bump level if labels are not attached [major,minor,patch]. Do nothing if it's empty"
+    required: false
   dry_run:
     description: "Do not actually tag next version if it's true"
+    required: false
+  github_token:
+    description: 'GITHUB_TOKEN to list pull requests and create tags'
+    default: '${{ github.token }}'
+    required: true
+  tag_as_user:
+    description: "Name to use when creating tags"
+    required: false
+  tag_as_email:
+    description: "Email address to use when creating tags"
+    required: false
 outputs:
   current_version:
     description: "current version"

action.yml

@@ -9,9 +9,15 @@ inputs:
     description: "Do not actually tag next version if it's true"
     required: false
   github_token:
-    description: 'GITHUB_TOKEN to list pull requests'
+    description: 'GITHUB_TOKEN to list pull requests and create tags'
     default: '${{ github.token }}'
     required: true
+  tag_as_user:
+    description: "Name to use when creating tags"
+    required: false
+  tag_as_email:
+    description: "Email address to use when creating tags"
+    required: false
 outputs:
   current_version:
     description: "current version"

entrypoint.sh

@@ -161,12 +161,20 @@ if [ "${ACTION}" = "labeled" ]; then
   post_pre_status
 else
   # Set up Git.
-  git config user.name "${GITHUB_ACTOR}"
-  git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
+  git config user.name "${INPUT_TAG_AS_USER:-${GITHUB_ACTOR}}"
+  git config user.email "${INPUT_TAG_AS_EMAIL:-${GITHUB_ACTOR}@users.noreply.github.com}"
 
   # Push the next tag.
   git tag -a "${NEXT_VERSION}" -m "${TAG_MESSAGE}"
-  git push origin "${NEXT_VERSION}"
+
+  if [ -n "${INPUT_GITHUB_TOKEN}" ]; then
+    bare_server_url=$(echo "${GITHUB_SERVER_URL}" | sed 's#^.\+://##')
+    git -c "http.${GITHUB_SERVER_URL}/.extraheader=" \
+      push "https://x-access-token:${INPUT_GITHUB_TOKEN}@${bare_server_url}/${GITHUB_REPOSITORY}.git" \
+      "${NEXT_VERSION}"
+  else
+    git push origin "${NEXT_VERSION}"
+  fi
 
   # Post post-bumpr status on merge.
   post_post_status