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moodle

Moodle Docker Image & Helm Chart. Based on Bitnami Charts and Images

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Usage

Docker image

Published to Docker Hub by .github/workflows/build.yml: next and a numeric <run-id> tag on every push to develop, and latest plus the released version (e.g. 5.2.1) whenever a version tag is pushed. Pin to a released version tag in anything other than a throwaway environment — next/latest move.

docker pull cloudtooling/moodle:5.2.1

It's a drop-in for bitnami/moodle: same environment variables (MOODLE_DATABASE_*, MOODLE_USERNAME/MOODLE_PASSWORD, SMTP_*, ...), same /bitnami/moodle + /bitnami/moodledata volume layout. See docker-compose.yml for a minimal local run against real MariaDB (docker compose up).

Helm chart

charts/moodle is not yet published to a chart repository or OCI registry from CI — consume it directly from a checkout of this repo until that's wired up:

helm install my-release cloudtooling/moodle:0.1. \
  --set image.tag=5.2.1 \
  --set moodleUsername=admin \
  --set moodlePassword=<password> \
  --set externalDatabase.host=<mariadb-host> \
  --set externalDatabase.password=<db-password>

See charts/moodle/values.yaml for the full parameter list (it's a fork of Bitnami's chart, so upstream's parameter docs mostly still apply).

Upgrading a persisted install across the Moodle 5.1 /public boundary

The first boot against a volume from before Moodle 5.1 triggers a one-time migration to the new /public document root layout (moodle_migrate_to_public_layout in rootfs/opt/bitnami/scripts/libmoodle.sh, see CLAUDE.md for the full story). It backs up the old codebase to a tarball in moodledata, merges it with the fresh image's public/ tree, and — as of this fork — automatically strips out core files and plugins Moodle itself has since removed (the qtype_random-class crash and "Mixed Moodle versions detected" upgrade-abort both come from exactly this kind of leftover, and are now handled for you). That merge, plus the real admin/cli/upgrade.php run that follows it, can take noticeably longer than a normal restart, especially on an install that's several Moodle versions behind.

The chart's startupProbe (enabled by default, generous failureThreshold) exists specifically to give this first boot room without needing to touch livenessProbe — startupProbe only gates the pod's first successful boot, then normal liveness/readiness take over, so there's nothing to remember to revert afterward. Kubernetes may also recursively chown the whole persisted volume for the pod's fsGroup before the container even starts (the VolumePermissionChangeInProgress event) — set podSecurityContext.fsGroupChangePolicy: OnRootMismatch to skip that on every rollout after the first.

If you're jumping across a version boundary this fork hasn't crossed before, refresh MOODLE_KNOWN_REMOVED_CORE_FILES and MOODLE_KNOWN_REMOVED_PLUGIN_DIRS in libmoodle.sh from the target version's own public/lib/upgradelib.php first — see CLAUDE.md.