~/hello has a spec but no compose file yet. Read the spec:

Create compose.yaml in the editor panel:

services:
  web:
    image: nginx:1.27
    ports:
      - "8080:80"

  cache:
    image: redis:7.4

Save, then start the stack and check it:

docker compose up -d
docker compose ps
curl -s localhost:8080

cache has no published port. Reach it from inside the project:

Answer the two questions from the up and ps output. Then remove what Compose created: