json-server:
  image: vimagick/json-server
  command: -H 0.0.0.0 -p 3000 -w db.json
  ports:
    - "3000:3000"
  volumes:
    - ./data:/data
  restart: always

data/db.json

{
  "posts": [
    { "id": 1, "title": "json-server", "author": "typicode" }
  ],
  "comments": [
    { "id": 1, "body": "some comment", "postId": 1 }
  ],
  "profile": { "name": "typicode" }
}

up and running

docker-compose up -d

pip install httpie

http GET :3000/posts
http POST :3000/posts id:=2 title=hello author=world
http PUT :3000/posts/2 title=Hello author=World
http PATCH :3000/posts/2 title=HELLO
http DELETE :3000/posts/2
http GET :3000/db