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add Docker deployment with Alpine image, release config and health check

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- Alpine multi-stage Dockerfile (131 MB image)
- Release overlays (bin/server, bin/migrate), env.sh, Release module
- Health check endpoint at GET /health
- Fly.io config with SQLite volume mount
- Fix hardcoded paths in optimizer.ex and variant_cache.ex to use
  Application.app_dir/2 (breaks in releases where Plug.Static serves
  from a different directory than CWD)
- strip_beams: true in release config
- Optimised .dockerignore and .gitignore for mockup variants

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
jamey
2026-02-08 16:21:05 +00:00
parent eaa4bbb3fa
commit 1ee37c853d
15 changed files with 320 additions and 32 deletions
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PROGRESS.md
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@@ -33,7 +33,7 @@
### Tier 2 — Production readiness (can deploy and run reliably)
5. **Hosting & deployment** — Fly.io or similar deployment config. Release configuration, runtime env setup, health checks. Observability: structured logging, error tracking (Sentry or similar), basic metrics.
5. **Hosting & deployment** — In progress. Alpine Docker image (131 MB), Fly.io config, release overlays, health check endpoint, hardcoded path fixes for releases. Still to do: observability (structured logging, error tracking, basic metrics).
6. **Litestream / SQLite replication** — Litestream for continuous SQLite backup to S3-compatible storage. Point-in-time recovery. Simple sidecar process, no code changes needed, works with vanilla SQLite. For the hosted platform (Tier 5), evaluate [Turso](https://turso.tech/) (libSQL fork of SQLite) with embedded read replicas via [ecto_libsql](https://github.com/ocean/ecto_libsql) adapter — gives multi-node reads without a separate replication daemon, but adds a dependency on the libSQL fork.
7. ~~**CI pipeline**~~ — ✅ Complete. `mix ci` alias: compile --warning-as-errors, deps.unlock --unused, format --check-formatted, credo, dialyzer, test. Credo configured with sensible defaults. Dialyzer with ignore file for false positives (Stripe types, Mix tasks, ExUnit internals). 612 tests, 0 failures.
8. **PageSpeed in CI** — Lighthouse CI to catch regressions. Fail the build if score drops below threshold. Protects the current 100% score.
@@ -56,7 +56,7 @@
17. **Hosted platform** — Marketing/brochure site for SimpleShop as a service. Subscribe/sign-up flow. Multi-tenancy with per-tenant databases. Stripe Connect for customer shops (each merchant connects their own Stripe account via OAuth).
18. **Migration & export** — Let shop owners export their data (products, orders, customers, theme settings). Import from other platforms (Shopify, WooCommerce). Portable data as a selling point for the self-hosted story.
19. **Internationalisation (i18n)** — Multi-language support via Gettext (already in Phoenix). Currency formatting (ex_cldr already in deps). RTL layout support. Per-shop locale configuration.
19. **Internationalisation (i18n)** — Multi-language support via Gettext (already in Phoenix). Currency formatting. RTL layout support. Per-shop locale configuration. **Note:** `ex_money`/`ex_cldr` are currently used *only* for `Cart.format_price/1` (a single GBP formatting call) but add ~13 MB to the release (ex_cldr 9.5 MB, digital_token 3.7 MB, ex_cldr_numbers, ex_cldr_currencies). Consider replacing with a simple `format_price/2` function that handles GBP/EUR/USD directly — all three use 2 decimal places and are trivial to format. Re-add `ex_money` later if proper locale-aware number formatting is needed (e.g., German `12.345,67 €`).
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