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Managing Secrets in Docker Compose – A Developer's Guide

A practical guide to securely managing secrets in Docker Compose for production deployments

Environment variables are accessible to all processes in a container They often appear in logs during debugging They can be exposed through application errors They make it difficult to maintain separation of concerns between services The following implementation uses Docker Compose's secrets feature to read environment variables from the host and mount them as files via a virtual filesystem in each of your services: While there are still some areas of improvements and limitations around permission enforcement (see docker/compose#12362), the available options provide a solid foundation for securing secrets in both development and smaller production environments.

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