ci: add ARM64 support to GitHub Actions

Author: wangeguo

.github/workflows/docker.yml

@@ -12,11 +12,15 @@ permissions:
 jobs:
   build:
     name: Build Image
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        platform: [linux/amd64]
+        include:
+          - platform: linux/amd64
+            os: ubuntu-latest
+          - platform: linux/arm64
+            os: ubuntu-22.04-arm
     steps:
       - name: Set environment variable
         run: echo "IMAGE_NAME=ghcr.io/${{ github.repository_owner }}/stackclass-server" >> $GITHUB_ENV

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "backend"
 description = "Backend API and services for StackClass"
-version = "0.27.0"
+version = "0.28.0"
 edition = "2024"
 
 default-run = "stackclass-server"

Cargo.toml

@@ -6,7 +6,7 @@
     "license": {
       "name": ""
     },
-    "version": "0.27.0"
+    "version": "0.28.0"
   },
   "paths": {
     "/v1/courses": {