Changes the intermediate image building steps to use registry caching, allowig us to always rebuild them, but do so very quickly when nothing has changed

docker-builders/get-build-json.py

@@ -1,102 +0,0 @@
-#!/usr/bin/env python3
-"""
-This is a helper script for the mutli-stage Docker image builder.
-It provides a single point of configuration for package version control.
-The output JSON object is used by the CI workflow to determine what versions
-to build and pull into the final Docker image.
-
-Python package information is obtained from the Pipfile.lock.  As this is
-kept updated by dependabot, it usually will need no further configuration.
-The sole exception currently is pikepdf, which has a dependency on qpdf,
-and is configured here to use the latest version of qpdf built by the workflow.
-
-Other package version information is configured directly below, generally by
-setting the version and Git information, if any.
-
-"""
-import argparse
-import json
-import os
-from pathlib import Path
-from typing import Final
-
-
-def _get_image_tag(
-    repo_name: str,
-    pkg_name: str,
-    pkg_version: str,
-) -> str:
-    return f"ghcr.io/{repo_name}/builder/{pkg_name}:{pkg_version}"
-
-
-def _main():
-    parser = argparse.ArgumentParser(
-        description="Generate a JSON object of information required to build the given package, based on the Pipfile.lock",
-    )
-    parser.add_argument(
-        "package",
-        help="The name of the package to generate JSON for",
-    )
-
-    PIPFILE_LOCK_PATH: Final[Path] = Path("Pipfile.lock")
-    BUILD_CONFIG_PATH: Final[Path] = Path(".build-config.json")
-
-    # Read the main config file
-    build_json: Final = json.loads(BUILD_CONFIG_PATH.read_text())
-
-    # Read Pipfile.lock file
-    pipfile_data: Final = json.loads(PIPFILE_LOCK_PATH.read_text())
-
-    args: Final = parser.parse_args()
-
-    repo_name: Final[str] = os.environ["GITHUB_REPOSITORY"]
-
-    # Default output values
-    version = None
-    git_tag = None
-    extra_config = {}
-
-    if args.package == "frontend":
-        # Version is just the branch or tag name
-        version = os.environ["GITHUB_REF_NAME"]
-    elif args.package in pipfile_data["default"]:
-        # Read the version from Pipfile.lock
-        pkg_data = pipfile_data["default"][args.package]
-        pkg_version = pkg_data["version"].split("==")[-1]
-        version = pkg_version
-
-        # Based on the package, generate the expected Git tag name
-        if args.package == "pikepdf":
-            git_tag = f"v{pkg_version}"
-        elif args.package == "psycopg2":
-            git_tag = pkg_version.replace(".", "_")
-
-        # Any extra/special values needed
-        if args.package == "pikepdf":
-            extra_config["qpdf_version"] = build_json["qpdf"]["version"]
-
-    elif args.package in build_json:
-        version = build_json[args.package]["version"]
-
-        if "git_tag" in build_json[args.package]:
-            git_tag = build_json[args.package]["git_tag"]
-    else:
-        raise NotImplementedError(args.package)
-
-    # The JSON object we'll output
-    output = {
-        "name": args.package,
-        "version": version,
-        "git_tag": git_tag,
-        "image_tag": _get_image_tag(repo_name, args.package, version),
-    }
-
-    # Add anything special a package may need
-    output.update(extra_config)
-
-    # Output the JSON info to stdout
-    print(json.dumps(output))
-
-
-if __name__ == "__main__":
-    _main()