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feat: add docker healthcheck to dokku container

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The official dokku/dokku image gains a HEALTHCHECK directive backed by a loopback-only HTTP endpoint at `127.0.0.1:18080/_dokku/health`. The endpoint reports 200 once first-boot bootstrap finishes, sshd and nginx are accepting connections, and `dokku ps:restore` completes; otherwise it returns 503. Changes are scoped to the Docker overlay and Dockerfile so debian-package installs are unaffected.
This commit is contained in:
Jose Diaz-Gonzalez
2026-05-10 21:17:09 -04:00
parent a553f04966
commit cc0843391f
5 changed files with 60 additions and 3 deletions
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8
docker/etc/runit/runsvdir/default/dokku-restore/finish
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@@ -10,6 +10,10 @@ if [[ "$1" -ne 0 ]]; then
fi
echo "Done restoring dokku apps."
exec sleep infinity
exit 0
while ! (echo > /dev/tcp/127.0.0.1/22) >/dev/null 2>&1; do sleep 1; done
while ! (echo > /dev/tcp/127.0.0.1/80) >/dev/null 2>&1; do sleep 1; done
touch /var/run/dokku/ready
echo "Dokku is ready."
exec sleep infinity