dockerizelisted

- Next.js: `output: 'standalone'`; multi-stage (deps → build → runner, `node:20-alpine`), copy `.next/standalone` + `static`, `USER node`, `HEALTHCHECK` on `/`. - Flask + GDAL/GeoPandas: base `python:3.11-slim` + `gdal-bin libgdal-dev` or `osgeo/gdal` image; `pip install --no-cache-dir`; gunicorn with `--workers 2 --threads 4 --timeout 600`; `HEALTHCHECK` on `/health`. - .NET: `mcr.microsoft.com/dotnet/sdk:8.0` build → `aspnet:8.0` runtime; `ASPNETCORE_URLS=http://+:8080`; non-root; health on `/health`. - Pipeline worker: CUDA base if GPU; mount `working_directory`; entrypoint runs one stage with `--resume`. - Compose: services + a `postgis/postgis` DB with a named volume; `.env` referenced, never committed; same env names as production. - Verify: image builds, container starts, health passes, size reported.