Install Docker, if you don't already have it, then add a Dockerfile to the "app" directory:
So, we started with an Alpine-based Docker image for Python 3.8.0. We then set a working directory along with two environment variables:
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Review Docker for Python Developers for more on structuring Dockerfiles as well as some best practices for configuring Docker for Python-based development.
Next, add a docker-compose.yml file to the project root:
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First, add a new service called db to docker-compose.yml:
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Update the Dockerfile to install the appropriate packages required for Psycopg2:
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Then, update the Dockerfile to copy over the entrypoint.sh file and run it as the Docker entrypoint command:
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If you have multiple environments, you may want to look at using a docker-compose.override.yml configuration file. With this approach, you'd add your base config to a docker-compose.yml file and then use a docker-compose.override.yml file to override those config settings based on the environment.
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