Updates to build and pipelines

Dockerfile

@@ -0,0 +1,33 @@
+# Multi-stage: build both variants (dev + bio), then nginx with host-based routing.
+# No buildx; plain docker build.
+
+FROM node:22-bookworm-slim AS builder
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+
+COPY . .
+
+# Build dev variant, move output, then build bio variant (same build/ dir).
+RUN set -e && \
+    CONTENT_VARIANT=dev pnpm run build && \
+    cp -r build /out/dev && \
+    CONTENT_VARIANT=bio pnpm run build && \
+    cp -r build /out/bio
+
+# Runtime: nginx serves /out/dev and /out/bio by Host header.
+FROM nginx:alpine
+
+COPY --from=builder /out/dev /usr/share/nginx/html/dev
+COPY --from=builder /out/bio /usr/share/nginx/html/bio
+COPY nginx/default.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80