Show HN: Pglayers – PostgreSQL extensions as stackable Docker layers

pglayers is a tool and Docker image distribution that simplifies PostgreSQL extension management by packaging each extension as a minimal, stackable Docker layer that can be combined with the official PostgreSQL image using simple COPY commands—eliminating the need for manual compilation or dependency installation. It offers both pre-built images with 80+ extensions (including profiles for Azure compatibility) and a modular approach where users can select and layer only the extensions they need. For PostgreSQL 18+, it implements isolated extension layouts that prevent file collisions and dependency conflicts between extensions.