feat(api-server): add container loadtest observability

deploy/container/api-server.Dockerfile

@@ -0,0 +1,49 @@
+FROM rust:1.88-bookworm AS rust-builder
+WORKDIR /workspace
+
+COPY server-rs ./server-rs
+RUN cargo build --release -p api-server --manifest-path server-rs/Cargo.toml && \
+    cp server-rs/target/release/api-server /tmp/api-server
+
+FROM debian:bookworm-slim AS api-runtime
+WORKDIR /srv/genarrative
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ca-certificates curl && \
+    rm -rf /var/lib/apt/lists/* && \
+    useradd --system --create-home --home-dir /srv/genarrative --shell /usr/sbin/nologin genarrative
+
+COPY --from=rust-builder /tmp/api-server /usr/local/bin/api-server
+
+RUN mkdir -p /var/lib/genarrative/auth && \
+    chown -R genarrative:genarrative /srv/genarrative /var/lib/genarrative
+
+USER genarrative
+EXPOSE 8082
+
+ENV GENARRATIVE_ENV=container \
+    GENARRATIVE_API_HOST=0.0.0.0 \
+    GENARRATIVE_API_PORT=8082 \
+    GENARRATIVE_AUTH_STORE_PATH=/var/lib/genarrative/auth/auth-store.json
+
+CMD ["api-server"]
+
+FROM node:22-bookworm-slim AS web-builder
+WORKDIR /workspace
+
+COPY package.json package-lock.json ./
+COPY apps/admin-web/package.json ./apps/admin-web/package.json
+RUN npm ci
+
+COPY index.html metadata.json tsconfig.json vite.config.ts ./
+COPY src ./src
+COPY public ./public
+COPY media ./media
+COPY packages ./packages
+COPY apps/admin-web ./apps/admin-web
+RUN npm run build:raw && npm run admin-web:build
+
+FROM nginx:1.27-alpine AS nginx-runtime
+COPY --from=web-builder /workspace/dist /srv/genarrative/web
+COPY --from=web-builder /workspace/apps/admin-web/dist /srv/genarrative/web/admin
+COPY deploy/container/nginx.conf /etc/nginx/nginx.conf