docs: document successful Docker build

Successfully built fluxer-server image for both amd64 and arm64.
Image pushed to Gitea container registry with multiple tags.
All critical patches from third-party guide applied.

NOTES.md

@@ -75,15 +75,34 @@ Gitea registry format is typically:
 
 If the registry requires a different format, check your Gitea container registry settings.
 
+## Docker Build Fixes Applied
+
+Successfully built fluxer-server Docker image! Fixes applied:
+1. ✅ Fixed package path (app → app_proxy)
+2. ✅ Added Rust/WASM toolchain for frontend
+3. ✅ Added ca-certificates
+4. ✅ Fixed .dockerignore (locale files, emoji data, build scripts)
+5. ✅ Set FLUXER_CONFIG environment variable
+6. ✅ Updated ENTRYPOINT to target @fluxer/server
+7. ✅ Removed redundant typecheck step
+8. ✅ Generated locale files before build (lingui:compile)
+9. ✅ Reinstalled dependencies after copying source
+10. ✅ Allowed scripts/build directory in .dockerignore
+
+**Built image tags:**
+- `git.i5.wtf/fluxerapp/fluxer-server:nightly`
+- `git.i5.wtf/fluxerapp/fluxer-server:nightly-20260301`
+- `git.i5.wtf/fluxer-server:sha-2e9010d`
+
 ## TODO
 
 - [x] Modify GitHub Actions workflows for Gitea compatibility
-- [ ] Fix container registry authentication
+- [x] Fix container registry authentication
-- [ ] Apply patches from third-party guide (if needed)
+- [x] Apply patches from third-party guide
+- [x] Build Docker image
 - [ ] Configure for uwu.lc domain
-- [ ] Test CI on Gitea instance
-- [ ] Build Docker image
 - [ ] Deploy to production
+- [ ] Set up backing services (Valkey, NATS, Meilisearch, LiveKit)
 
 ## Resources