chore: import upstream snapshot with attribution

showcase/shell/Dockerfile

@@ -0,0 +1,47 @@
+FROM node:20-slim AS builder
+ARG COMMIT_SHA=unknown
+ARG BRANCH=unknown
+WORKDIR /app
+
+# Copy only what the shell + scripts need
+COPY showcase/scripts/package.json ./scripts/package.json
+COPY showcase/shell/package.json ./shell/package.json
+
+# Install deps for both (standalone, no workspace)
+RUN cd scripts && npm install --silent && cd ../shell && npm install --silent
+
+# Copy source
+COPY showcase/shared/ ./shared/
+COPY showcase/integrations/ ./integrations/
+COPY showcase/scripts/ ./scripts/
+COPY showcase/shell/ ./shell/
+COPY showcase/shell-docs/src/content/ ./shell-docs/src/content/
+
+# Bake commit info into Next.js build
+ENV NEXT_PUBLIC_COMMIT_SHA=${COMMIT_SHA}
+ENV NEXT_PUBLIC_BRANCH=${BRANCH}
+
+# Generate registry + content, then build Next.js
+RUN cd scripts && node node_modules/tsx/dist/cli.mjs generate-registry.ts \
+    && node node_modules/tsx/dist/cli.mjs bundle-demo-content.ts \
+    && node node_modules/tsx/dist/cli.mjs bundle-starter-content.ts \
+    && node node_modules/tsx/dist/cli.mjs generate-search-index.ts \
+    && cd ../shell && npx next build
+
+FROM node:20-slim AS runner
+WORKDIR /app
+ARG COMMIT_SHA=unknown
+ARG BRANCH=unknown
+ENV NODE_ENV=production
+ENV PORT=10000
+ENV NEXT_PUBLIC_COMMIT_SHA=${COMMIT_SHA}
+ENV NEXT_PUBLIC_BRANCH=${BRANCH}
+
+COPY --from=builder /app/shell/.next ./.next
+COPY --from=builder /app/shell/node_modules ./node_modules
+COPY --from=builder /app/shell/package.json ./
+COPY --from=builder /app/shell/public ./public
+
+EXPOSE 10000
+CMD ["npx", "next", "start", "-p", "10000"]
+# Cache bust: 1775013460