[eric] runner: per-app VM image boots a published bundle from storage and serves backend + frontend from one process (ENG-293)

openswarm-apprunner/Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.12-slim
+WORKDIR /srv/runner
+# The webapp template's dependency set, preinstalled so most apps boot without a pip step.
+RUN pip install --no-cache-dir "fastapi[standard]" "pydantic>=2.9.0" httpx uvicorn "typeguard==4.4.2" boto3
+COPY boot.py serve.py fallback.py swarm_debug.py ./
+ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1 PYTHONPATH=/srv/runner
+EXPOSE 8080
+CMD ["python", "boot.py"]