up

.dockerignore

@@ -0,0 +1 @@
+test.go

.github/workflows/ci.yaml

@@ -0,0 +1,37 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches:
+      - 'master'
+    tags:
+      - 'v*'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: checkout code
+        uses: actions/checkout@v2
+      -
+        name: Docker Buildx
+        id: buildx
+        uses: crazy-max/ghaction-docker-buildx@v3.3.1
+        with:
+          buildx-version: latest
+          qemu-version: latest
+      -
+        name: Available platforms
+        run: echo ${{ steps.buildx.outputs.platforms }}
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Run Buildx
+        run: |
+          docker buildx build \
+          --platform linux/amd64,linux/386,linux/arm64,linux/arm/v7,linux/arm/v6 \
+          -t mirrors2/helloworld:latest . --push

.gitignore

@@ -0,0 +1 @@
+test.go

Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.15.9-alpine AS builder
+LABEL anther="cjun"
+WORKDIR /app
+COPY ./main.go /app
+ENV GO111MODULE=off
+RUN GOARCH=amd64 GOOS=linux go build -ldflags="-s -w" -o  hello main.go
+
+FROM alpine:latest AS runner
+COPY --from=builder /app/hello /app/hello 
+WORKDIR /app
+EXPOSE 80
+CMD ["./hello"]

Makefile

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+# https://eddycjy.com/posts/go/gin/2018-08-26-makefile/
+.PHONY: build clean tool lint docker help
+
+all: build
+
+build:
+	go build -v .
+
+tool:
+	go tool vet . |& grep -v vendor; true
+	gofmt -w .
+
+lint:
+	golint ./...
+
+clean:
+	rm -rf main helloworld
+	go clean -i .
+
+docker:
+	docker build -t mirrors2/helloworld:latest . 
+
+help:
+	@echo "make: compile packages and dependencies"
+	@echo "make tool: run specified go tool"
+	@echo "make lint: golint ./..."
+	@echo "make clean: remove object files and cached files"
+	@echo "make docker: build docker image"

README.md

@@ -0,0 +1,26 @@
+## a web helloworld docker image 
+
+```
+docker pull mirrors2/helloworld
+
+docker run -itd --rm --name helloworld -p 80:80 mirrors2/helloworld
+
+#curl localhost?hello=world
+```
+
+Open in Browser http://localhost:30000
+
+
+
+## run in k8s
+```
+kubectl apply -f deployment/helloworld.yaml
+
+kubectl get svc -o wide
+
+kubectl get pods -o wide 
+
+kubectl logs -f [pod name] 
+
+```
+

deployment/helloworld.yaml

@@ -0,0 +1,52 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: helloworld
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: helloworld
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 1
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app:  helloworld
+    spec:
+      containers:
+      - name: helloworld
+        image: mirrors2/helloworld:latest
+        imagePullPolicy: IfNotPresent
+        ports:
+        - containerPort:  80
+        # livenessProbe:
+        #   httpGet:
+        #     path: /
+        #     port: 80
+        #   initialDelaySeconds: 5
+        #   timeoutSeconds: 10
+        # readinessProbe:
+        #   httpGet:
+        #     path: /
+        #     port: 80
+        #   initialDelaySeconds: 5
+        #   timeoutSeconds: 10
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: helloworld
+  namespace: default
+spec:
+  selector:
+    app: helloworld
+  type: NodePort
+  ports:
+  - port: 80  
+    targetPort: 80
+    protocol: TCP
+    nodePort: 30000

go.mod

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+module hello
+
+go 1.13
+
+require github.com/prometheus/common v0.9.1 // indirect

go.sum

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main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+var (
+	msg string
+)
+
+func main() {
+	var port string
+	if len(os.Args) > 1 {
+		port = ":" + os.Args[1]
+	}
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Query().Get("hello") != "" {
+			msg = r.URL.Query().Get("hello")
+		}
+
+		fmt.Println(r.RemoteAddr, r.URL.String())
+		fmt.Println("Scheme", r.URL.Scheme, "Host", r.URL.Host, "Path", r.URL.Path)
+		io.WriteString(w, fmt.Sprintf("hello %s"+"\n", msg))
+	})
+
+	if port != "" {
+		fmt.Println("当前监听:", port)
+		fmt.Println(http.ListenAndServe(port, mux))
+	} else {
+		fmt.Println("当前监听:80")
+		fmt.Println(http.ListenAndServe(":80", mux))
+
+	}
+
+}