Common Docker Compose Security Mistakes in Self-Hosted Homelabs
Self-hosting with Docker Compose offers control and flexibility but often introduces security risks due to common configuration mistakes. Many users expose databases, run containers with excessive privileges, or embed secrets directly in configuration files without realizing the implications. Proper security practices, such as limiting network exposure and using non-root users, can significantly reduce these risks.
- ▪Exposing database ports like 5432 or 3306 to the public internet increases the risk of unauthorized access.
- ▪Using 'privileged: true' or 'network_mode: host' grants containers broad host-level access that may not be necessary.
- ▪Running containers as root and embedding secrets directly in docker-compose.yml files are frequent security oversights.
- ▪Safer alternatives include binding database ports to localhost, using specific capabilities instead of full privileges, and managing secrets externally.
- ▪Many of these issues stem from prioritizing convenience over security in homelab environments.
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