Merge pull request #4 from laironacosta/feature/dockerizer

feat: dockerizing go app and using pg embed database

Author: engineerit2014

.env

@@ -0,0 +1,5 @@
+# Postgres
+DB_HOST=db-postgres:5432
+DB_USER=postgres
+DB_PASSWORD=postgres
+DB_NAME=ms_gin_go

Dockerfile

@@ -0,0 +1,40 @@
+# Start from golang base image
+FROM golang:alpine as builder
+
+# Add Maintainer info
+LABEL maintainer="Lairon Acosta <lairon14@gmail.com>"
+
+# Install git.
+# Git is required for fetching the dependencies.
+RUN apk update && apk add --no-cache git
+
+# Set the current working directory inside the container
+WORKDIR /app
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and the go.sum files are not changed
+RUN go mod download
+
+# Copy the source from the current directory to the working Directory inside the container
+COPY . .
+
+# Build the Go app
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
+
+# Start a new stage from scratch
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /root/
+
+# Copy the Pre-built binary file from the previous stage. Observe we also copied the .env file
+COPY --from=builder /app/main .
+COPY --from=builder /app/.env .
+
+# Expose port 8080 to the outside world
+EXPOSE 8080
+
+#Command to run the executable
+CMD ["./main"]

docker-compose.yml

@@ -0,0 +1,36 @@
+version: '3'
+networks:
+  ms-go-network:
+    driver: bridge
+services:
+  db-postgres:
+    image: postgres:latest
+    container_name: full_db_postgres
+    environment:
+      - POSTGRES_USER=${DB_USER}
+      - POSTGRES_PASSWORD=${DB_PASSWORD}
+      - POSTGRES_DB=${DB_NAME}
+    ports:
+      - '5432:5432'
+    restart: on-failure
+    volumes:
+      - database_postgres:/var/lib/postgresql/data
+    networks:
+      - ms-go-network
+  app:
+    container_name: full_app
+    build: .
+    ports:
+      - 8080:8080
+    restart: on-failure
+    volumes:
+      - api:/usr/src/app/
+    env_file:
+      - .env
+    depends_on:
+      - db-postgres
+    networks:
+      - ms-go-network
+volumes:
+  api:
+  database_postgres:

main.go

@@ -8,15 +8,17 @@ import (
 	repo "github.com/laironacosta/ms-gin-go/repository"
 	"github.com/laironacosta/ms-gin-go/router"
 	"github.com/laironacosta/ms-gin-go/services"
+	"os"
 )
 
 func main() {
 	gin := gin.Default()
 
 	db := pgdb.NewPgDB(&pg.Options{
-		User:     "postgres",
-		Password: "postgres",
-		Database: "pg-db-go",
+		Addr:     os.Getenv("DB_HOST"),
+		User:     os.Getenv("DB_USER"),
+		Password: os.Getenv("DB_PASSWORD"),
+		Database: os.Getenv("DB_NAME"),
 	})
 
 	userRepo := repo.NewUserRepository(db)