2.1 KiB
2.1 KiB
Compose sample application
Elixir application with Phoenix framework and a Postgres database
Project structure:
.
├── app
│ ├── Dockerfile
│ ...
├── docker-compose.yaml
├── phoenix_output.png
└── README.md
services:
app:
build: app
environment:
...
db:
image: postgres
ports:
- "5432:5432"
environment:
...
The compose file defines an application with three services app and db.
When deploying the application, docker-compose maps the port 4000 of the app container to port 4000 of the host as specified in the file.
Make sure port 4000 on the host is not already being in use.
Deploy with docker-compose
$ docker-compose up -d
Creating network "phoenix-postgres_default" with the default driver
Creating volume "phoenix-postgres_postgres" with default driver
...
Successfully built faa13730018d
Successfully tagged phoenix-postgres_app:latest
Image for service app was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
Creating phoenix-postgres_db_1 ... done
Creating phoenix-postgres_app_1 ... done
Expected result
Listing containers must show two containers running and the port mapping as below:
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a12ab4dc42fb phoenix-postgres_app "sh entrypoint.sh" 22 seconds ago Up 20 seconds 0.0.0.0:4000->4000/tcp phoenix-postgres_app_1
39c7a3212d51 postgres "docker-entrypoint.s…" 23 seconds ago Up 21 seconds 5432/tcp phoenix-postgres_db_1
After the application starts, navigate to http://localhost:4000 in your web browser:
Stop and remove the containers
$ docker-compose down
Stopping phoenix-postgres_app_1 ... done
Stopping phoenix-postgres_db_1 ... done
Removing network phoenix-postgres_default