cleanup file structure, dockerize app

docker-compose.yml

@@ -0,0 +1,18 @@
+services:
+  api:
+    build:
+      context: .
+      args:
+        APP_VERSION: ${APP_VERSION:-dev}
+    ports:
+      - "${API_PORT:-3000}:3000"
+    env_file:
+      - .env
+    environment:
+      API_PORT: "3000"
+    healthcheck:
+      test: ["CMD", "wget", "-q", "-O", "-", "http://127.0.0.1:3000/health"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+      start_period: 5s