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77 lines
2.6 KiB
Markdown
77 lines
2.6 KiB
Markdown
## Compose sample application
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### React application with a Rust backend and a Postgresql database
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Project structure:
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```
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.
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├── backend
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│ ├── Dockerfile
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│ ...
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├── compose.yaml
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├── frontend
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│ ├── ...
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│ └── Dockerfile
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└── README.md
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```
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[_compose.yaml_](compose.yaml)
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```
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services:
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backend:
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build: backend
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...
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db:
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image: postgres:12-alpine
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...
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frontend:
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build: frontend
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ports:
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- 3000:3000
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...
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```
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The compose file defines an application with three services `frontend`, `backend` and `db`.
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When deploying the application, docker compose maps port 3000 of the frontend service container to port 3000 of the host as specified in the file.
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Make sure port 3000 on the host is not already being in use.
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## Deploy with docker compose
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```
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$ docker compose up -d
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Creating network "react-rust-postgres_default" with the default driver
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Building backend
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...
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Successfully tagged react-rust-postgres_frontend:latest
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WARNING: Image for service frontend was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
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Creating react-rust-postgres_frontend_1 ... done
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Creating react-rust-postgres_db_1 ... done
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Creating react-rust-postgres_backend_1 ... done
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```
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## Expected result
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Listing containers must show three containers running and the port mapping as below:
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```
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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30b7d9dc4898 react-rust-postgres_backend "cargo run --offline" 37 seconds ago Up 35 seconds 8000/tcp react-rust-postgres_backend_1
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0bca0cb682b8 react-rust-postgres_frontend "docker-entrypoint.s…" 42 seconds ago Up 41 seconds 0.0.0.0:3000->3000/tcp react-rust-postgres_frontend_1
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1611961bf3d1 postgres:12-alpine "docker-entrypoint.s…" 42 seconds ago Up 36 seconds 0.0.0.0:5432->5432/tcp react-rust-postgres_db_1
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```
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After the application starts, navigate to `http://localhost:3000` in your web browser to get a colorful message.
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Stop and remove the containers
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```
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$ docker compose down
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Stopping react-rust-postgres_backend_1 ... done
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Stopping react-rust-postgres_frontend_1 ... done
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Stopping react-rust-postgres_db_1 ... done
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Removing react-rust-postgres_backend_1 ... done
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Removing react-rust-postgres_frontend_1 ... done
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Removing react-rust-postgres_db_1 ... done
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Removing network react-rust-postgres_default
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```
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