Change go version in Dockerfile to 1.22, add ci

.github/workflows/docker-image.yml

@@ -0,0 +1,20 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Vendor mod file
+      run: go mod vendor
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag ghcr.io/debabky/voting-svc

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20-alpine as buildbase
+FROM golang:1.22-alpine as buildbase
 
 RUN apk add git build-base