Add publish github action and bump python version in Dockerfile

.github/workflows/publish.yml

@@ -0,0 +1,20 @@
+name: publish
+
+on:
+  push:
+    tags:
+      - 'v1.*'
+      - 'gh-action-test-*'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags:
+            - ghcr.io/${{github.repository}}:${{github.ref}}

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.6-alpine3.7
+FROM python:3.12-alpine3.19
 
 COPY . /python
 WORKDIR /python