137 lines
3.9 KiB
Markdown
137 lines
3.9 KiB
Markdown
# Custom Container Images
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This repository builds a small set of OCI/container images published at
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`git.ajpanton.se`.
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The images are intended to stay close to their upstream base images while adding
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a few commonly useful database/runtime extensions.
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## Images
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| Image | Description |
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| `git.ajpanton.se/ajp_anton/postgres-custom:18` | PostgreSQL 18 with selected extension packages installed and `pg_cron`/VectorChord preloaded. |
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| `git.ajpanton.se/ajp_anton/php8-pgsql:8` | PHP 8 FPM on Alpine with PostgreSQL client runtime support and the `pdo_pgsql` PHP extension enabled. |
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| `git.ajpanton.se/ajp_anton/python-tools:3` | Python 3 task runner with ExifTool and a web control panel for mounted task scripts. |
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## Included Components
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### `postgres-custom`
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Base image:
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- `postgres:18`
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- Moving upstream major-version tag. Patch releases are picked up when the image
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is rebuilt.
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Installed from Debian/PostgreSQL apt repositories:
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- `ca-certificates`
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- `wget`
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- `postgresql-18-cron`
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- `postgresql-18-pgvector`
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- `postgresql-18-postgis-3`
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Installed from a GitHub release asset:
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- VectorChord package `postgresql-18-vchord_0.5.3-1_amd64.deb`
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- VectorChord is pinned to `0.5.3` at this time.
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Runtime defaults added by this image:
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- `shared_preload_libraries=pg_cron,vchord`
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- `cron.database_name=firecrawl`
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### `php8-pgsql`
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Base image:
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- `php:8-fpm-alpine`
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- Moving upstream major-version tag. Patch releases are picked up when the image
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is rebuilt.
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Build-time package:
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- `postgresql-dev`
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Runtime package:
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- `libpq`
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Compiled PHP extension:
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- `pdo_pgsql`
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The compiled extension and PHP config are copied from a build stage into the
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final runtime image.
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### `python-tools`
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Base image:
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- `python:3`
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- The image follows the moving Python 3 tag. When upstream Python 3 moves to a
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new minor release, this image follows it on the next rebuild.
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Installed from Debian apt repositories:
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- `ca-certificates`
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- `exiftool`
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Pinned Python packages:
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- `Flask==3.1.0`
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- `waitress==3.0.2`
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Included application:
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- A server-rendered web control panel for discovering and running reviewed,
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zero-input Python scripts mounted at runtime.
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- Per-group task queues, SQLite run history, captured output, and task-process
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cancellation.
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- The default command starts the control panel with `python -m app`.
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Intended use:
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- Run reviewed, autonomous task scripts mounted at runtime, including metadata
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extraction scripts that need ExifTool.
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- Use the included task control panel. Its generic deployment example and
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application documentation are in `python-tools/`.
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- Keep host systems clean by avoiding host-level package installs.
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## Tags
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Moving deployment tags:
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- `git.ajpanton.se/ajp_anton/postgres-custom:18`
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- `git.ajpanton.se/ajp_anton/php8-pgsql:8`
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- `git.ajpanton.se/ajp_anton/python-tools:3`
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Descriptive tags:
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- `git.ajpanton.se/ajp_anton/postgres-custom:18-postgis3-vchord0.5.3`
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- `git.ajpanton.se/ajp_anton/php8-pgsql:8-fpm-alpine`
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Convenience tags:
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- `git.ajpanton.se/ajp_anton/postgres-custom:latest`
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- `git.ajpanton.se/ajp_anton/php8-pgsql:latest`
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- `git.ajpanton.se/ajp_anton/python-tools:latest`
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Tags are mutable. A weekly candidate build only repoints a deployment tag when
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its content fingerprint changed: base image, build context, build arguments,
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installed packages, or image-specific generated files.
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## Update Cadence
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Images are rebuilt weekly. They may also be rebuilt after repository changes or
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manual runs. Each run builds a candidate without cache, then publishes it only
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when its content fingerprint differs from the current deployment image.
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Each rebuild pulls the current upstream base image and installs the currently
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available apt/apk packages. If the base image or repository packages changed,
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the resulting image digest changes and the same tag points to the new image.
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Pinned build inputs do not update automatically. In this repository, VectorChord
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is pinned to `0.5.3`; changing it requires a repository update.
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