diff --git a/.drone.yaml b/.drone.yaml
deleted file mode 100644
index 480adb7..0000000
--- a/.drone.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-kind: pipeline
-name: default
-
-steps:
-- name: test
-  image: golang
-  commands:
-  - go test -v ./...
-  - go build -o ./bin/drone-example .
diff --git a/.drone.yml b/.drone.yml
new file mode 100644
index 0000000..cf85fd5
--- /dev/null
+++ b/.drone.yml
@@ -0,0 +1,35 @@
+kind: pipeline
+name: default
+
+steps:
+- name: test
+  image: golang
+  commands:
+  - go test -v ./...
+  - go build -v -o ./bin/drone-example .
+
+---
+kind: pipeline
+name: deploy
+
+steps:
+- name: deploy
+  image: docker:cli
+  volumes:
+  - name: docker-socket
+    path: /var/run/docker.sock
+  commands:
+  - docker build -t drone-example .
+  - docker rm -f drone-example
+  - docker run -d -p 127.241.212.77:1098 --restart always --name drone-example drone-example
+
+volumes:
+- name: docker-socket
+  host:
+    path: /var/run/docker.sock
+
+trigger:
+  event:
+  - promote
+  target:
+  - production
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..b45d9d3
--- /dev/null
+++ b/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/drone-example .
+
+CMD ["./bin/drone-example"]
\ No newline at end of file
diff --git a/main.go b/main.go
index 8fca152..f097d72 100644
--- a/main.go
+++ b/main.go
@@ -1,24 +1,46 @@
 package main
 
 import (
-	"fmt"
+	"encoding/json"
 	"log"
+	"mime"
+	"net/http"
+	"strconv"
 
 	"git.phc.dm.unipi.it/phc/drone-example/foo"
 )
 
 func main() {
-	var a, b int
-
-	fmt.Printf("a = ")
-	if _, err := fmt.Scanln("%d", &a); err != nil {
-		log.Fatal(err)
-	}
-	fmt.Printf("b = ")
-	if _, err := fmt.Scanln("%d", &b); err != nil {
-		log.Fatal(err)
-	}
-
-	result := foo.Sum(a, b)
-	log.Printf("a + b = %v", result)
+	r := http.NewServeMux()
+	r.HandleFunc("/foo", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+
+		aStr := r.URL.Query().Get("a")
+		bStr := r.URL.Query().Get("b")
+
+		a, err := strconv.Atoi(aStr)
+		if err != nil {
+			http.Error(w, `the query param "a" must be an integer`, http.StatusUnprocessableEntity)
+			return
+		}
+
+		b, err := strconv.Atoi(bStr)
+		if err != nil {
+			http.Error(w, `the query param "b" must be an integer`, http.StatusUnprocessableEntity)
+			return
+		}
+
+		result := foo.Sum(a, b)
+
+		w.Header().Set("Content-Type", mime.TypeByExtension(".json"))
+		if err := json.NewEncoder(w).Encode(result); err != nil {
+			log.Fatal(err)
+			return
+		}
+	})
+
+	log.Fatal(http.ListenAndServe(":5000", r))
 }