ci: add docker scripts

.gitea/workflows/go-deploy.yaml

@@ -1,17 +0,0 @@
-run-name: ${{ gitea.actor }}, deploy log101.dev services
-on: [push]
-
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Setup Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: "1.21.x"
-      - name: Install dependencies
-        run: go get .
-      - name: Build
-        run: go build -v ./...

.gitignore

@@ -23,3 +23,4 @@ go.work
 
 gin-bin
 TODO
+.env

docker-compose.yml

@@ -0,0 +1,32 @@
+version: '3.8'
+
+services:
+  web:
+    build:
+      dockerfile: docker/go/Dockerfile
+    container_name: go_gin_app
+    ports:
+      - "8000:8000"
+    depends_on:
+      db:
+        condition: service_healthy
+    env_file:
+      - .env
+
+  db:
+    image: mysql:8.0
+    container_name: mysql_db
+    restart: always
+    volumes:
+      - db_data:/var/lib/mysql
+      - ./schema.sql:/docker-entrypoint-initdb.d/schema.sql
+    env_file:
+      - .env
+    healthcheck:
+      test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
+      interval: 2s
+      timeout: 20s
+      retries: 10
+
+volumes:
+  db_data:

docker/go/Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.22.3
+
+WORKDIR /usr/src/app
+
+# pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change
+COPY go.mod go.sum ./
+RUN go mod download && go mod verify
+
+COPY . .
+RUN go build -v -o /usr/local/bin/app ./...
+
+CMD ["app"]

main.go

@@ -66,11 +66,12 @@ func countEmojis(postId string) ([]EmojiCount, error) {
 }
 
 func main() {
+	mysqlHost := os.Getenv("DBHOST")
 	cfg := mysql.Config{
 		User:   os.Getenv("DBUSER"),
 		Passwd: os.Getenv("DBPASS"),
 		Net:    "tcp",
-		Addr:   "127.0.0.1:3306",
+		Addr:   mysqlHost + ":3306",
 		DBName: "emojis",
 	}
 	// Get a database handle.
@@ -145,5 +146,5 @@ func main() {
 		c.HTML(http.StatusOK, "emoji_form.tmpl", gin.H{"postId": postId, "results": emojiCounter})
 	})
 
-	r.Run(":3001")
+	r.Run(":8000")
 }

schema.sql

@@ -1,4 +1,8 @@
 -- schema.sql
+CREATE DATABASE IF NOT EXISTS emojis;
+
+USE emojis;
+
 CREATE TABLE IF NOT EXISTS emoji_clicks (
     id INT PRIMARY KEY AUTO_INCREMENT,
     post_id TEXT NOT NULL,