restructure repo, separate sample app from docker configs

05-example-web-application/api-golang/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"log"
+	"os"
+	"time"
+
+	"github.com/gin-gonic/gin"
+
+	"api-golang/database"
+)
+
+func init() {
+	errDB := database.InitDB(os.Getenv("DATABASE_URL"))
+	if errDB != nil {
+		log.Fatalf("⛔ Unable to connect to database: %v\n", errDB)
+	} else {
+		log.Println("DATABASE CONNECTED 🥇")
+	}
+
+}
+
+func main() {
+
+	r := gin.Default()
+	var tm time.Time
+
+	r.GET("/", func(c *gin.Context) {
+		tm = database.GetTime(c)
+		c.JSON(200, gin.H{
+			"api": "golang",
+			"now": tm,
+		})
+	})
+	r.Run() // listen and serve on 0.0.0.0:8080
+}