Minor cleanup of extension build commands

[hlinnaka]

There used to be some pg version dependencies in these extensions, but now that there isn't, follow the simpler pattern used in other extensions. No change in the produced images.

[github-actions]

7282 tests run: 6916 passed, 0 failed, 366 skipped (full report)

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Flaky tests (3)

Postgres 16

• test_physical_replication_config_mismatch_max_locks_per_transaction: release-arm64

Postgres 15

• test_physical_replication_config_mismatch_max_locks_per_transaction: release-x86-64

Postgres 14

• test_peer_recovery: release-x86-64

Code coverage* (full report)

• functions: 32.7% (8050 of 24640 functions)
• lines: 47.7% (66843 of 140041 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
2239879 at 2025-01-11T16:07:03.707Z :recycle:}

[myrrc]

LGTM.

Maybe we could pipe wget to tar xf directly? Pretty sure it would be negligible but even a minor speedup could be of use in CI.

[hlinnaka]

LGTM.

Maybe we could pipe wget to tar xf directly? Pretty sure it would be negligible but even a minor speedup could be of use in CI.

Makes sense. I'm also thinking of extracting these repetitive tasks into some little helper script. For example, the hypopg download steps now look like this:

RUN wget https://github.com/HypoPG/hypopg/archive/refs/tags/1.4.1.tar.gz -O hypopg.tar.gz && \
    echo "9afe6357fd389d8d33fad81703038ce520b09275ec00153c6c89282bcdedd6bc hypopg.tar.gz" | sha256sum --check && \
    mkdir hypopg-src && cd hypopg-src && tar xzf ../hypopg.tar.gz --strip-components=1 -C .

We could encapsulate those steps into invoking a script like this:

RUN download-extension --name=hypopg \
    --tarball-url=https://github.com/HypoPG/hypopg/archive/refs/tags/1.4.1.tar.gz \
    --sha256sum="9afe6357fd389d8d33fad81703038ce520b09275ec00153c6c89282bcdedd6bc"

It's not much shorter, but it's maybe a little more clear. Extra options could be added for things like different extension version for different pg versions.