Docker machine copying all of the host machine files? - docker

Question

I'm fairly new to docker, but I recently discovered something that I just can't wrap my head around. I started a docker machine:
docker-machine create -d virtualbox machine_name
Created a docker-compose file for my application:
version: '3.3'
services:
client:
container_name: client
build:
context: ./services/client
dockerfile: Dockerfile
volumes:
- './services/client:/usr/src/app'
ports:
- '3007:3000'
environment:
- NODE_ENV=development
depends_on:
- project
links:
- project
db:
container_name: db
build:
context: ./services/db
dockerfile: Dockerfile
ports:
- 5435:5432
environment:
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
project:
container_name: project
build: ./services/project
volumes:
- './services/project:/usr/src/app'
- './services/project/package.json:/usr/src/app/package.json'
ports:
- 3000:3000
environment:
- DATABASE_URL=postgres://postgres:postgres#db:5432/esports_manager_dev
- DATABASE_TEST_URL=postgres://postgres:postgres#db:5432/esports_manager_test
- NODE_ENV=${NODE_ENV}
- TOKEN_SECRET=tempsectre
depends_on:
- db
links:
- db
and then I ssh'd into the docker machine to find my entire filesystem. Is this intended behaviour, I can't seem to find anything in the docs that talks about it.