feat: add http server

.gitea/workflow/ci.yaml

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+name: ci
+
+on:
+  push:
+    branches:
+      - "main"
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64
+          tags: |
+            esinio/gitea-runner-ci-demo:latest
+            

Dockerfile

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+FROM golang:alpine as build
+
+WORKDIR /go/src
+
+ADD . .
+
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories \
+    && apk --no-cache add ca-certificates \
+    && go env -w GOPROXY='https://goproxy.cn,direct' \
+    && go mod tidy \
+    && go build -o /go/bin/app .
+
+FROM scratch
+# copy the ca-certificate.crt from the build stage
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /go/bin/app /app
+
+EXPOSE 80
+
+ENTRYPOINT ["/app"]

go.mod

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+module github.com/gitea/runner-ci-demo
+
+go 1.18
+
+require github.com/gorilla/mux v1.8.1

go.sum

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+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=

main.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/gorilla/mux"
+)
+
+func main() {
+	r := mux.NewRouter()
+	r.HandleFunc("/", HomeHandler)
+	r.HandleFunc("/now", TimeHandler)
+	http.Handle("/", r)
+
+	srv := &http.Server{
+		Handler: r,
+		Addr:    "0.0.0.0:80",
+		// Good practice: enforce timeouts for servers you create!
+		WriteTimeout: 15 * time.Second,
+		ReadTimeout:  15 * time.Second,
+	}
+
+	log.Fatal(srv.ListenAndServe())
+}
+
+func HomeHandler(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprint(w, "Hello world")
+}
+
+func TimeHandler(w http.ResponseWriter, r *http.Request) {
+	now := time.Now()
+	res := now.GoString()
+	fmt.Fprint(w, res)
+}