runtipi/apps/costco-watch/build

costco-watch image

Dependency-free Node service (node:22-alpine + curl for the healthcheck). Source: https://git.alexzaw.dev/alexz/costco-watch (working copy: ~/projects/costco-watch). Build + push with ./build.sh.

Gotchas:

• TARGET_URL must go through the costco-tire cloudflared proxy AND that hostname needs a Cloudflare Transform Rule adding browser headers (User-Agent, Accept, Accept-Language, Sec-Fetch-*). Without it Costco stalls the request until timeout and the checker reports "error"/"blocked".
• State (last stock value, transition history) lives in ${APP_DATA_DIR}/data; wiping it means the next check can re-alert.