SSL-enabled Postgres DB image

This repository contains the logic to build SSL-enabled Postgres images.

By default, when you deploy Postgres from the official Postgres template on Railway, the image that is used is built from this repository!

Why though?

The official Postgres image in Docker hub does not come with SSL baked in.

Since this could pose a problem for applications or services attempting to connect to Postgres services, we decided to roll our own Postgres image with SSL enabled right out of the box.

How does it work?

The Dockerfiles contained in this repository start with the official Postgres image as base. Then the init-ssl.sh script is copied into the docker-entrypoint-initdb.d/ directory to be executed upon initialization.

Certificate expiry

By default, the cert expiry is set to 820 days. You can control this by configuring the SSL_CERT_DAYS environment variable as needed.

Certificate renewal

When a redeploy or restart is done the certificates expiry is checked, if it has expired or will expire in 30 days a new certificate is automatically generated.

A note about ports

By default, this image is hardcoded to listen on port 5432 regardless of what is set in the PGPORT environment variable. We did this to allow connections to the postgres service over the RAILWAY_TCP_PROXY_PORT. If you need to change this behavior, feel free to build your own image without passing the --port parameter to the CMD command in the Dockerfile.

License

sami286/postgres-ssl

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