initial commit

Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:latest
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download && go mod verify
+
+COPY . .
+RUN go build -v -o ./bin/server .
+
+CMD ["./bin/server"]

compose.yml

@@ -0,0 +1,9 @@
+version: '3'
+services:  
+  app:
+    build:
+      context: . 
+      dockerfile: Dockerfile
+    ports:
+      - "127.14.115.95:1091:4000" 
+    restart: unless-stopped

go.mod

@@ -0,0 +1,3 @@
+module git.phc.dm.unipi.it/phc/portainer-example
+
+go 1.21.1

main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"mime"
+	"net/http"
+)
+
+func main() {
+	r := http.NewServeMux()
+	r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+
+		w.Header().Set("Content-Type", mime.TypeByExtension(".json"))
+		if err := json.NewEncoder(w).Encode("ok"); err != nil {
+			log.Fatal(err)
+			return
+		}
+	})
+
+	log.Fatal(http.ListenAndServe(":4000", r))
+}