Dev or specify image tag (#38)

* default tag to dev for pr merge trigger, but allow user to specify tag on manual run

Signed-off-by: 2byrds <2byrds@gmail.com>

---------

Signed-off-by: 2byrds <2byrds@gmail.com>

.github/workflows/publish-api.yml

@@ -2,16 +2,17 @@
 name: Publish Docker image
 
 on:
-#  push:
-#    branches:
-#      - "main"
-#  pull_request:
-#    branches:
-#      - "main"
+  push:
+    branches:
+      - "main"
+  pull_request:
+    branches:
+      - "main"
   workflow_dispatch:
     inputs:
       version:
-        required: true
+        required: false
+        default: 'dev'
 jobs:
   push_to_registry:
     name: Push Docker image to Docker Hub