cap04-11-multi-stage

Author: argentinaluiz

src/multi-stage/golang-app/Dockerfile

@@ -0,0 +1,24 @@
+FROM golang:1.24-alpine AS builder
+
+WORKDIR /app
+
+COPY . .
+RUN --mount=type=cache,target=/go/cache,id=go-mod \
+    go mod tidy
+
+RUN go build -o server .
+
+FROM alpine:3.20 AS xpto
+
+WORKDIR /app
+
+RUN sleep 5
+RUN echo "full cycle" > /app/fullcycle.txt
+
+FROM scratch
+
+COPY --from=builder /app/server /server
+COPY --from=xpto /app/fullcycle.txt /fullcycle.txt
+EXPOSE 8000
+
+CMD ["/server"]

src/multi-stage/golang-app/docker-bake.hcl

@@ -0,0 +1,16 @@
+group "default" {
+    targets = ["golang-app-prod"]
+}
+
+target "golang-app-prod" {
+    context = "."
+    dockerfile = "Dockerfile"
+    tags = ["golang-app:latest"]
+}
+
+target "golang-app-ci" {
+    context = "."
+    dockerfile = "Dockerfile"
+    tags = ["golang-app:ci"]
+    target = "builder"
+}

src/multi-stage/golang-app/go.mod

@@ -0,0 +1,5 @@
+module golang-app
+
+go 1.24.1
+
+require github.com/gorilla/mux v1.8.1

src/multi-stage/golang-app/go.sum

@@ -0,0 +1,2 @@
+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=

src/multi-stage/golang-app/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func main() {
+	r := mux.NewRouter()
+
+	r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "Hello from Golang server!")
+	})
+
+	r.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "OK")
+	})
+
+	log.Println("Server is running on port 8000")
+	log.Fatal(http.ListenAndServe(":8000", r))
+}

src/multi-stage/Dockerfile.node src/multi-stage/node/Dockerfilesrc/multi-stage/Dockerfile.node renamed to src/multi-stage/node/Dockerfile

@@ -8,8 +8,8 @@ WORKDIR /home/node/app
 
 RUN --mount=type=bind,source=package.json,target=package.json \
     --mount=type=bind,source=package-lock.json,target=package-lock.json \
-    --mount=type=cache,target=/home/node/.npm \
-    npm ci
+    --mount=type=cache,target=/home/node/.npm,uid=1000,gid=1000,id=npm-cache \
+    npm ci 
 
 COPY --chown=node:node . .
 
@@ -25,14 +25,11 @@ RUN mkdir /home/node/app
 
 WORKDIR /home/node/app
 
-RUN --mount=type=bind,source=package.json,target=package.json \
-    --mount=type=bind,source=package-lock.json,target=package-lock.json \
-    --mount=type=cache,target=/home/node/.npm \
-    npm ci --only=production
-
-COPY . .
+COPY --from=ci --chown=node:node /home/node/app .
 RUN npm run build
 
+RUN --mount=type=cache,target=/home/node/.npm,uid=1000,gid=1000,id=npm-cache \
+    npm ci --only=production
 
 FROM node:23.0.0-slim AS production
 
@@ -50,4 +47,4 @@ COPY --chown=node:node --from=builder /home/node/app/package.json ./
 
 EXPOSE 3000
 
-CMD [ "npm", "run", "start:prod" ]
+CMD [ "node", "dist/main.js" ]

src/multi-stage/node/docker-bake.hcl

@@ -0,0 +1,16 @@
+group "default" {
+    targets = [ "nestjs-prod" ]
+}
+
+target "nestjs-prod" {
+    context = "./nestjs-project"
+    dockerfile = "../Dockerfile"
+    tags = ["nestjs:latest"]
+}
+
+target "nestjs-ci"  {
+  context = "./nestjs-project"
+  dockerfile = "../Dockerfile"
+  tags = ["nestjs:ci"]
+  target = "ci"
+}