b53e4542c9
(Most of this is almost identical to #263.)
* Docker Desktop Development Environments config
* Use cache volumes for pip
* Downgrade from Python 3.11 _alpha_ -> Python 3.10
* Use port `8000` to avoid conflicts with Airplay on
macOS for default Flask port `5000`
* Use `SIGINT` to gracefully stop Flask
* Formatting fixes in `compose.yaml`
Signed-off-by: Milas Bowman <milas.bowman@docker.com>
3.3 KiB
3.3 KiB
Compose sample application
Python/Flask application using a Redis database
Project structure:
.
├── Dockerfile
├── README.md
├── app.py
├── compose.yaml
└── requirements.txt
services:
redis:
image: redislabs/redismod
ports:
- '6379:6379'
web:
build: .
ports:
- "8000:8000"
volumes:
- .:/code
depends_on:
- redis
Deploy with docker compose
$ docker compose up -d
[+] Running 24/24
⠿ redis Pulled
...
⠿ 565225d89260 Pull complete
[+] Building 12.7s (10/10) FINISHED
=> [internal] load build definition from Dockerfile ...
[+] Running 3/3
⠿ Network flask-redis_default Created
⠿ Container flask-redis-redis-1 Started
⠿ Container flask-redis-web-1 Started
Expected result
Listing containers must show one container running and the port mapping as below:
$ docker compose ps
NAME COMMAND SERVICE STATUS PORTS
flask-redis-redis-1 "redis-server --load…" redis running 0.0.0.0:6379->6379/tcp
flask-redis-web-1 "/bin/sh -c 'python …" web running 0.0.0.0:8000->8000/tcp
After the application starts, navigate to http://localhost:8000 in your web browser or run:
$ curl localhost:8000
This webpage has been viewed 2 time(s)
Monitoring Redis keys
Connect to redis database by using redis-cli command and monitor the keys.
redis-cli -p 6379
127.0.0.1:6379> monitor
OK
1646634062.732496 [0 172.21.0.3:33106] "INCRBY" "hits" "1"
1646634062.735669 [0 172.21.0.3:33106] "GET" "hits"
Stop and remove the containers
$ docker compose down
Use with Docker Development Environments
You can use this sample with the Dev Environments feature of Docker Desktop.
To develop directly on the services inside containers, use the HTTPS Git url of the sample:
https://github.com/docker/awesome-compose/tree/master/flask-redis