|
|
## Compose sample application
|
|
|
|
|
|
### Use with Docker Development Environments
|
|
|
|
|
|
You can open this sample in the Dev Environments feature of Docker Desktop version 4.12 or later.
|
|
|
|
|
|
[Open in Docker Dev Environments <img src="../open_in_new.svg" alt="Open in Docker Dev Environments" align="top"/>](https://open.docker.com/dashboard/dev-envs?url=https://github.com/docker/awesome-compose/tree/master/nginx-flask-mysql)
|
|
|
|
|
|
### Python/Flask with Nginx proxy and MySQL database
|
|
|
|
|
|
Project structure:
|
|
|
```
|
|
|
.
|
|
|
├── compose.yaml
|
|
|
├── flask
|
|
|
│ ├── Dockerfile
|
|
|
│ ├── requirements.txt
|
|
|
│ └── server.py
|
|
|
└── nginx
|
|
|
└── nginx.conf
|
|
|
|
|
|
```
|
|
|
|
|
|
[_compose.yaml_](compose.yaml)
|
|
|
```
|
|
|
services:
|
|
|
backend:
|
|
|
build:
|
|
|
context: backend
|
|
|
target: builder
|
|
|
...
|
|
|
db:
|
|
|
# We use a mariadb image which supports both amd64 & arm64 architecture
|
|
|
image: mariadb:10-focal
|
|
|
# If you really want to use MySQL, uncomment the following line
|
|
|
#image: mysql:8
|
|
|
...
|
|
|
proxy:
|
|
|
build: proxy
|
|
|
...
|
|
|
```
|
|
|
The compose file defines an application with three services `proxy`, `backend` and `db`.
|
|
|
When deploying the application, docker compose maps port 80 of the proxy service container to port 80 of the host as specified in the file.
|
|
|
Make sure port 80 on the host is not already being in use.
|
|
|
|
|
|
> ℹ️ **_INFO_**
|
|
|
> For compatibility purpose between `AMD64` and `ARM64` architecture, we use a MariaDB as database instead of MySQL.
|
|
|
> You still can use the MySQL image by uncommenting the following line in the Compose file
|
|
|
> `#image: mysql:8`
|
|
|
|
|
|
## Deploy with docker compose
|
|
|
|
|
|
```
|
|
|
$ docker compose up -d
|
|
|
Creating network "nginx-flask-mysql_default" with the default driver
|
|
|
Pulling db (mysql:8.0.19)...
|
|
|
5.7: Pulling from library/mysql
|
|
|
...
|
|
|
...
|
|
|
WARNING: Image for service proxy was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
|
|
|
Creating nginx-flask-mysql_db_1 ... done
|
|
|
Creating nginx-flask-mysql_backend_1 ... done
|
|
|
Creating nginx-flask-mysql_proxy_1 ... done
|
|
|
```
|
|
|
|
|
|
## Expected result
|
|
|
|
|
|
Listing containers should show three containers running and the port mapping as below:
|
|
|
```
|
|
|
$ docker compose ps
|
|
|
NAME COMMAND SERVICE STATUS PORTS
|
|
|
nginx-flask-mysql-backend-1 "flask run" backend running 0.0.0.0:8000->8000/tcp
|
|
|
nginx-flask-mysql-db-1 "docker-entrypoint.s…" db running (healthy) 3306/tcp, 33060/tcp
|
|
|
nginx-flask-mysql-proxy-1 "nginx -g 'daemon of…" proxy running 0.0.0.0:80->80/tcp
|
|
|
```
|
|
|
|
|
|
After the application starts, navigate to `http://localhost:80` in your web browser or run:
|
|
|
```
|
|
|
$ curl localhost:80
|
|
|
<div>Blog post #1</div><div>Blog post #2</div><div>Blog post #3</div><div>Blog post #4</div>
|
|
|
```
|
|
|
|
|
|
Stop and remove the containers
|
|
|
```
|
|
|
$ docker compose down
|
|
|
```
|