Adding an option to specify a custom commit message (#18)

Author: angelobanse

README.md

@@ -23,10 +23,11 @@ See [action.yml](action.yml).
     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   with:
     email: [email protected]
-    build_dir: _site  # optional
-    branch: website   # optional
-    cname: domain.tld # optional
-    jekyll: no        # optional
+    build_dir: _site               # optional
+    branch: website                # optional
+    cname: domain.tld              # optional
+    jekyll: no                     # optional
+    commit_message: custom message # optional
 ```
 
 **Workflow example:**

action.yml

@@ -19,6 +19,9 @@ inputs:
     description: '`yes` in case of a Jekyll site.'
     required: false
     default: 'no'
+  commit_message:
+    description: 'A custom commit message.'
+    required: false
 outputs:
   result:
     description: 'The deploy result'

entrypoint.sh

@@ -63,6 +63,12 @@ if [ ! -z "$INPUT_CNAME" ]; then
   echo "$INPUT_CNAME" > CNAME
 fi
 
+# Custom commit message
+if [ -z "$INPUT_COMMIT_MESSAGE" ]
+then
+  INPUT_COMMIT_MESSAGE="$GITHUB_ACTOR published a site update"
+fi
+
 # .nojekyll
 if [ "$INPUT_JEKYLL" != "yes" ]; then
   touch .nojekyll
@@ -73,7 +79,7 @@ if [ -z "$(git status --porcelain)" ]; then
   result="Nothing to deploy"
 else
   git add -Af .
-  git commit -m "$GITHUB_ACTOR published a site update"
+  git commit -m "$INPUT_COMMIT_MESSAGE"
   git push -fq origin $TARGET_BRANCH > /dev/null
   # push is OK?
   if [ $? = 0 ]