Upload 4 new, 6 modified files from chat-switchboard-v0.5.1.zip

Dockerfile

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+# ============================================
+# Chat Switchboard v0.5 - Unified Dockerfile
+# ============================================
+# Stage 1: Build Go backend
+# Stage 2: Download JS vendor libs (marked, DOMPurify)
+# Stage 3: Production image (nginx + backend)
+#
+# Vendor libs are baked in during build so the
+# app works in disconnected (SCIF) environments
+# with no CDN access.
+# ============================================
+
+# ── Stage 1: Go backend build ────────────────
+FROM golang:1.22-bookworm AS backend
+
+WORKDIR /app
+COPY server/go.mod server/go.sum* ./
+COPY server/ .
+RUN go mod download && go mod tidy && go mod verify
+RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o /bin/switchboard .
+
+# ── Stage 2: Vendor JS libs ─────────────────
+FROM node:20-alpine AS vendor
+
+WORKDIR /vendor
+RUN npm pack marked@16.3.0 && \
+    tar xzf marked-16.3.0.tgz && \
+    cp package/lib/marked.umd.js marked.min.js && \
+    rm -rf package marked-16.3.0.tgz
+
+RUN npm pack dompurify@3.2.4 && \
+    tar xzf dompurify-3.2.4.tgz && \
+    cp package/dist/purify.min.js purify.min.js && \
+    rm -rf package dompurify-3.2.4.tgz
+
+# ── Stage 3: Production ─────────────────────
+FROM nginx:1-alpine
+
+RUN apk add --no-cache bash
+
+# Go backend binary
+COPY --from=backend /bin/switchboard /usr/local/bin/switchboard
+
+# Frontend static files
+COPY src/ /usr/share/nginx/html/
+
+# Vendor libs (overwrite any existing copies in src/vendor/)
+COPY --from=vendor /vendor/marked.min.js /usr/share/nginx/html/vendor/marked.min.js
+COPY --from=vendor /vendor/purify.min.js /usr/share/nginx/html/vendor/purify.min.js
+
+# nginx config
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Entrypoint: start Go backend, then nginx
+COPY docker-entrypoint.sh /docker-entrypoint.d/90-start-backend.sh
+RUN chmod +x /docker-entrypoint.d/90-start-backend.sh
+
+EXPOSE 80