nginx-golang-mysql: add dev envs support

* Add Docker Desktop Development Environments config
* Use nginx image with read-only bind mount instead of building a
  custom image
* Upgrade Go dependencies

Signed-off-by: Milas Bowman <milas.bowman@docker.com>

nginx-golang-mysql/.docker/docker-compose.yaml

@@ -0,0 +1,50 @@
+services:
+  backend:
+    build:
+      context: backend
+      target: builder
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    secrets:
+      - db-password
+    depends_on:
+      db:
+        condition: service_healthy
+
+  db:
+    image: mariadb:10-focal
+    command: '--default-authentication-plugin=mysql_native_password'
+    restart: always
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
+      interval: 3s
+      retries: 5
+      start_period: 30s
+    secrets:
+      - db-password
+    volumes:
+      - db-data:/var/lib/mysql
+    environment:
+      - MYSQL_DATABASE=example
+      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db-password
+    expose:
+      - 3306
+
+  proxy:
+    image: nginx
+    volumes:
+      - type: bind
+        source: ./proxy/nginx.conf
+        target: /etc/nginx/conf.d/default.conf
+        read_only: true
+    ports:
+      - 80:80
+    depends_on: 
+      - backend
+
+volumes:
+  db-data:
+
+secrets:
+  db-password:
+    file: db/password.txt

nginx-golang-mysql/backend/Dockerfile

@@ -1,10 +1,41 @@
-FROM golang:1.13-alpine AS build
-WORKDIR /go/src/github.com/org/repo
+# syntax=docker/dockerfile:1.4
+FROM --platform=$BUILDPLATFORM golang:1.18-alpine AS builder
+
+WORKDIR /code
+
+ENV CGO_ENABLED 0
+ENV GOPATH /go
+ENV GOCACHE /go-build
+
+COPY go.mod go.sum ./
+RUN --mount=type=cache,target=/go/pkg/mod/cache \
+    go mod download
+
 COPY . .
 
-RUN go build -o server .
+RUN --mount=type=cache,target=/go/pkg/mod/cache \
+    --mount=type=cache,target=/go-build \
+    go build -o bin/backend main.go
 
-FROM alpine:3.12
-EXPOSE 8000
-COPY --from=build /go/src/github.com/org/repo/server /server
-CMD ["/server"]
+CMD ["/code/bin/backend"]
+
+FROM builder as dev-envs
+
+RUN <<EOF
+apk update
+apk add git
+EOF
+
+RUN <<EOF
+addgroup -S docker
+adduser -S --shell /bin/bash --ingroup docker vscode
+EOF
+
+# install Docker tools (cli, buildx, compose)
+COPY --from=gloursdocker/docker / /
+
+CMD ["go", "run", "main.go"]
+
+FROM scratch
+COPY --from=builder /code/bin/backend /usr/local/bin/backend
+CMD ["/usr/local/bin/backend"]

nginx-golang-mysql/backend/go.mod

@@ -1,10 +1,11 @@
-module github.com/org/repo
+module github.com/docker/awesome-compose/nginx-golang-mysql/backend
 
-go 1.13
+go 1.18
 
 require (
-	github.com/go-sql-driver/mysql v1.3.0
-	github.com/gorilla/context v1.1.1
-	github.com/gorilla/handlers v1.3.0
-	github.com/gorilla/mux v1.6.2
+	github.com/go-sql-driver/mysql v1.6.0
+	github.com/gorilla/handlers v1.5.1
+	github.com/gorilla/mux v1.8.0
 )
+
+require github.com/felixge/httpsnoop v1.0.1 // indirect

nginx-golang-mysql/backend/go.sum

@@ -0,0 +1,8 @@
+github.com/felixge/httpsnoop v1.0.1 h1:lvB5Jl89CsZtGIWuTcDM1E/vkVs49/Ml7JJe07l8SPQ=
+github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
+github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/gorilla/handlers v1.5.1 h1:9lRY6j8DEeeBT10CvO9hGW0gmky0BprnvDI5vfhUHH4=
+github.com/gorilla/handlers v1.5.1/go.mod h1:t8XrUpc4KVXb7HGyJ4/cEnwQiaxrX/hz1Zv/4g96P1Q=
+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
+github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=

nginx-golang-mysql/compose.yaml

@@ -1,20 +1,23 @@
 services:
   backend:
-    build: backend
+    build:
+      context: backend
+      target: builder
     secrets:
       - db-password
     depends_on:
       db:
         condition: service_healthy
+
   db:
     # We use a mariadb image which supports both amd64 & arm64 architecture
-    image: mariadb:10.6.4-focal
+    image: mariadb:10-focal
     # If you really want to use MySQL, uncomment the following line
-    #image: mysql:8.0.27
+    #image: mysql:8
     command: '--default-authentication-plugin=mysql_native_password'
     restart: always
     healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
+      test: ['CMD-SHELL', 'mysqladmin ping -h 127.0.0.1 --password="$$(cat /run/secrets/db-password)" --silent']
       interval: 3s
       retries: 5
       start_period: 30s
@@ -27,14 +30,22 @@ services:
       - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db-password
     expose:
       - 3306
+
   proxy:
-    build: proxy
+    image: nginx
+    volumes:
+      - type: bind
+        source: ./proxy/nginx.conf
+        target: /etc/nginx/conf.d/default.conf
+        read_only: true
     ports:
       - 80:80
     depends_on: 
       - backend
+
 volumes:
   db-data:
+
 secrets:
   db-password:
     file: db/password.txt

nginx-golang-mysql/proxy/Dockerfile

@@ -1,2 +0,0 @@
-FROM nginx:1.13-alpine
-COPY conf /etc/nginx/conf.d/default.conf

nginx-golang-mysql/proxy/nginx.conf

@@ -2,7 +2,7 @@ server {
     listen       80;
     server_name  localhost;
     location / {
-        proxy_pass   http://backend:8000;
+        proxy_pass          http://backend:8000;
+        proxy_http_version  1.1;
     }
-
 }