Add docker-compose

cmd/main.go

@@ -10,7 +10,7 @@ const input = "input.txt"
 func main() {
 	application, err := zombie.Init(input)
 	if err != nil {
-		log.Panicf("failed to init application: %v", err)
+		log.Panic(err.Error())
 	}
 	application.Run()
 	application.Stats()

docker-compose.yaml

@@ -0,0 +1,11 @@
+version: "3"
+services:
+  app:
+    image: golang:1.13
+    working_dir: /app
+    volumes:
+      - .:/app
+      - go-libs:/go/pkg
+    command: ["sh", "-c", "go run cmd/main.go"]
+volumes:
+  go-libs: {}