Post-process adapter-node output into a single self-contained
build/bundle.mjs (614 KB) via esbuild, then ship it on a fresh
alpine:3.21 base with just the node binary copied in. Drops the
node_modules + package manager baggage that comes with node:25-alpine.
- Add esbuild devDep + `bundle` script (scripts/bundle.mjs)
- Dockerfile: drop `deps` stage; final stage is alpine + node binary +
bundle + static client assets
- Uncompressed image: 177 MB -> 149 MB (-16%)
- Verified: /, /healthz, static assets all respond identically;
outbound TLS to api.marktvogt.de works via node's built-in CA bundle
