In commit 7640d794 ("CI: Integrate Musl build into vtest.yml"), the
alpine job was integrated into VTest.yml. However, most of the task are
still duplicated and changes in the workflow need edits of copy/paste
code in two places because of that.
This commit deduplicates the code by making the alpine job part of the
matrix, like it was done for macOS.
Bash might not always be preinstalled and we don't make use of any
bash-specific features either. Switch to POSIX sh for simplicity.
This partly reverts the fix in 073240044e, which
installed `bash` for the musl job.
The vtest binary does not seem to be cached correctly by actions/cache,
the cause of the problem seems to be the binary is installed outside the
github workspace. This patch installs the binary in ~/vtest/ to fix the
issue.
github complains about cache@v4:
Node.js 20 actions are deprecated. The following actions are running on
Node.js 20 and may not work as expected: actions/cache@v4. Actions will
be forced to run with Node.js 24 by default starting June 2nd, 2026.
Node.js 20 will be removed from the runner on September 16th, 2026.
Please check if updated versions of these actions are available that
support Node.js 24. To opt into Node.js 24 now, set the
FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the
runner or in your workflow file. Once Node.js 24 becomes the default,
you can temporarily opt out by setting
ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see:
https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
The VTest2 tarball URL at code.vinyl-cache.org/vtest/VTest2/archive/main.tar.gz
no longer works. Switch scripts/build-vtest.sh to use a git clone of the
repository instead.
Add a cache step in the setup-vtest CI action so VTest is only rebuilt
when its HEAD commit changes, keyed on the runner OS and the VTest2 HEAD
SHA.
