26 lines
1.4 KiB
Text
26 lines
1.4 KiB
Text
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# Thermograph database image: PostgreSQL 18 with pg_duckdb.
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#
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# pg_duckdb embeds DuckDB inside Postgres, which lets the DB container read the
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# app's Parquet climate cache directly for ad-hoc analytics:
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#
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# SELECT * FROM read_parquet('/parquet/1026_-2857.parquet');
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#
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# Why FROM the official pg_duckdb image instead of `FROM postgres:18` + compile:
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# pg_duckdb links a full DuckDB build, so compiling it from source in this
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# Dockerfile would mean pulling the DuckDB toolchain and a long, fragile build.
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# The maintainers (duckdb/pg_duckdb, MotherDuck) publish an official PG18 image
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# that is genuine PostgreSQL 18.1 on Debian 12 bookworm -- the exact same base
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# as the official `postgres:18` image, using the standard postgres
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# docker-entrypoint.sh. So POSTGRES_USER / POSTGRES_PASSWORD / POSTGRES_DB /
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# PGDATA / /docker-entrypoint-initdb.d / pg_isready all behave identically to
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# `postgres:18`; this is a drop-in replacement for the compose `db` service.
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#
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# Pinned to a specific patch tag (not 18-main) for reproducible builds.
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FROM pgduckdb/pgduckdb:18-v1.1.1
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# Bake the parquet init script so the image enables the extension on first init
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# even without the compose bind mount. It is CREATE EXTENSION IF NOT EXISTS, so
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# it is idempotent with the base image's own 0001-install-pg_duckdb.sql.
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# Build context is the repo root (see deploy/db/README.md for the compose snippet).
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COPY deploy/db/init/ /docker-entrypoint-initdb.d/
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