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nextcloud/Containers/windmill/start.sh

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#!/bin/bash
set -e
# Validate required environment variables
if [ -z "$BASE_URL" ]; then
echo "BASE_URL must be provided. Exiting!"
exit 1
fi
export TZ="${TZ:-Etc/UTC}"
# Clear the cache volume when the image has been updated.
# /etc/windmill-image-build-epoch is written at image build time.
# A copy is stored in the cache volume after first start.
# If the two differ the image was updated and any stale cached artefacts
# (uv tools, worker dirs) should be removed so Windmill starts clean.
IMAGE_EPOCH_FILE="/etc/windmill-image-build-epoch"
CACHE_EPOCH_FILE="/tmp/windmill/cache/.image-build-epoch"
if [ -f "$IMAGE_EPOCH_FILE" ]; then
IMAGE_EPOCH="$(cat "$IMAGE_EPOCH_FILE")"
if [ -f "$CACHE_EPOCH_FILE" ]; then
CACHE_EPOCH="$(cat "$CACHE_EPOCH_FILE")"
if [ "$IMAGE_EPOCH" != "$CACHE_EPOCH" ]; then
echo "Windmill image updated (was $CACHE_EPOCH, now $IMAGE_EPOCH). Clearing cache..."
find /tmp/windmill/cache -mindepth 1 -maxdepth 1 ! -name '.image-build-epoch' -exec rm -rf {} +
fi
fi
echo "$IMAGE_EPOCH" > "$CACHE_EPOCH_FILE"
fi
PGDATA="/var/lib/postgresql/data"
# Initialize PostgreSQL data directory on first run.
# No su/chown needed — we already own PGDATA (the windmill user owns the volume).
if [ -z "$(ls -A "$PGDATA" 2>/dev/null)" ]; then
echo "Initializing PostgreSQL database for Windmill..."
initdb -D "$PGDATA" \
--username=windmill \
--auth-local=trust \
--auth-host=trust \
--no-instructions
# Allow local connections without a password; listen only on localhost
cat > "$PGDATA/pg_hba.conf" << 'EOF'
# TYPE DATABASE USER ADDRESS METHOD
local all all trust
host all all 127.0.0.1/32 trust
host all all ::1/128 trust
EOF
cat >> "$PGDATA/postgresql.conf" << 'EOF'
listen_addresses = 'localhost'
EOF
# Start PostgreSQL temporarily to create the windmill database, then stop it.
# supervisord will restart it properly afterward.
pg_ctl -D "$PGDATA" start -w -o "-k /var/run/postgresql"
psql -h /var/run/postgresql -U windmill postgres \
-c "CREATE DATABASE windmill OWNER windmill;"
pg_ctl -D "$PGDATA" stop -w
echo "PostgreSQL initialization complete."
fi
exec supervisord -c /supervisord.conf