Init commit

Author: joekr

.dockerignore

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+# OS generated files #
+######################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db

.gitignore

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+# MayMeetup Demo
+
+This is a demo of how to setup a simple website using docker and docker-compose using Docker for mac.
+Version 1.11.1-beta10 (build: 6662)
+
+* `sudo sh -c 'echo "127.0.0.1\tdockermeetup.dev" >> /etc/hosts'`
+* `docker-compose up -d`
+* open http://dockermeetup.dev in a browser

README

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+version: '2'
+services:
+  lb:
+    image: dockercloud/haproxy:1.2
+    ports:
+      # HOST:CONTAINER
+      - '80:80'
+    links:
+      - web
+    volumes:
+      # HOST:CONTAINER
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      BALANCE: roundrobin
+      VIRTUAL_HOST: dockermeetup.dev
+
+  web:
+    restart: always
+    dns:
+      - 8.8.8.8
+    build:
+      context: ./web
+      dockerfile: Dockerfile
+    environment:
+      DATABASE_USER: root
+      DATABASE_PASS: password
+      DATABASE_HOST: db
+      DATABASE_NAME: dev-db
+      GIN_MODE: debug
+      HTTP_PORT: 8080
+    expose:
+      - "8080"
+    links:
+      - db
+
+  db:
+    image: mysql
+    environment:
+      MYSQL_DATABASE: "dev-db"
+      MYSQL_ROOT_PASSWORD: "password"
+    ports:
+      - "3306:3306"

docker-compose.yml

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+FROM golang
+
+# Copy the local package files to the container's workspace.
+ADD . /go/src/web
+
+WORKDIR /go/src/web
+
+# Document that the service listens on port 8080.
+EXPOSE 8080
+
+RUN go get github.com/jinzhu/gorm
+RUN go get github.com/joho/godotenv
+RUN go get github.com/gin-gonic/gin
+RUN go get github.com/go-sql-driver/mysql
+
+RUN go build -o main .
+CMD ["/go/src/web/main"]

web/Dockerfile

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/gin-gonic/gin"
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/jinzhu/gorm"
+	"github.com/joho/godotenv"
+)
+
+func main() {
+
+	initEnv()
+	defer initLogger().Close()
+
+	router := gin.Default()
+	router.Use(CORSMiddleware())
+	router.LoadHTMLGlob("templates/*")
+	router.Static("img", "./public/img")
+
+	router.GET("/", func(c *gin.Context) {
+		c.HTML(http.StatusOK, "index.tmpl", gin.H{
+			"title": "Docker Meetup",
+		})
+	})
+
+	v1 := router.Group("v1")
+	{
+		v1.GET("/health_check", func(c *gin.Context) {
+			c.JSON(200, gin.H{
+				"message": "healthy",
+			})
+		})
+	}
+
+	port := os.Getenv("HTTP_PORT")
+
+	fmt.Println("Port: ", port)
+	router.Run(fmt.Sprintf(":%s", port))
+}
+
+func initEnv() {
+	env := godotenv.Load()
+	if env != nil {
+		log.Println("Error loading .env file")
+	}
+}
+
+func initDB() (*gorm.DB, error) {
+	dbUser := os.Getenv("DATABASE_USER")
+	dbPass := os.Getenv("DATABASE_PASS")
+	dbHost := os.Getenv("DATABASE_HOST")
+	dbName := os.Getenv("DATABASE_NAME")
+
+	connectionString := fmt.Sprintf("%s:%s@tcp(%s:3306)/%s?charset=utf8&parseTime=True", dbUser, dbPass, dbHost, dbName)
+
+	db, err := gorm.Open("mysql", connectionString)
+	if err != nil {
+		fmt.Println(err)
+		return nil, err
+	}
+	db.DB().Ping()
+	db.DB().SetMaxIdleConns(5)
+	db.DB().SetMaxOpenConns(50)
+
+	logMode := true
+	if os.Getenv("GIN_MODE") == "release" {
+		logMode = false
+	}
+	db.LogMode(logMode)
+
+	return db, nil
+}
+
+func initLogger() *os.File {
+
+	var logFile *os.File
+	var err error
+	if _, err = os.Stat("log"); os.IsNotExist(err) {
+		logFile, err = os.Create("log")
+		log.Println("Logfile created")
+	} else {
+		logFile, err = os.OpenFile("log", os.O_WRONLY, 0666)
+		log.Println("Logfile opened")
+	}
+
+	if err != nil {
+		log.Fatal("Logfile error: ", err)
+	}
+
+	log.SetOutput(logFile)
+
+	return logFile
+}
+
+// CORSMiddleware test
+func CORSMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Max-Age", "86400")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Origin, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, If-Modified-Since, expiry, uid, token-type, access-token, client, accept")
+		c.Writer.Header().Set("Access-Control-Expose-Headers", "Content-Length")
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+
+		if c.Request.Method == "OPTIONS" {
+			fmt.Println("OPTIONS")
+			c.AbortWithStatus(200)
+		} else {
+			c.Next()
+		}
+	}
+}

web/main.go

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+<html>
+    <h1>
+        {{ .title }}
+    </h1>
+    <img src="img/bourbon-docker-whale-home-logo.png">
+</html>