Emdash source with visual editor image upload fix

Fixes:
1. media.ts: wrap placeholder generation in try-catch
2. toolbar.ts: check r.ok, display error message in popover

Dockerfile

@@ -0,0 +1,49 @@
+FROM node:22-slim AS base
+
+RUN corepack enable && corepack prepare pnpm@10.28.0 --activate
+WORKDIR /app
+
+# ---- Install dependencies ----
+FROM base AS deps
+
+COPY pnpm-lock.yaml pnpm-workspace.yaml package.json ./
+COPY packages/ packages/
+COPY templates/ templates/
+COPY demos/ demos/
+COPY docs/package.json docs/package.json
+COPY e2e/fixture/package.json e2e/fixture/package.json
+
+RUN sed -i '/slidev/d' pnpm-workspace.yaml
+RUN pnpm install --frozen-lockfile
+
+# ---- Build ----
+FROM deps AS build
+
+COPY . .
+RUN sed -i '/slidev/d' pnpm-workspace.yaml
+RUN sed -i 's|file:./data.db|file:./data/data.db|' templates/blog/astro.config.mjs
+
+RUN pnpm build && pnpm --filter @emdash-cms/template-blog build
+
+# Bundle the blog template into a standalone deployment
+RUN pnpm --filter @emdash-cms/template-blog deploy /deploy --prod --legacy
+
+# Copy build output and seed data into the deploy directory
+RUN cp -r /app/templates/blog/dist /deploy/dist
+RUN cp -r /app/templates/blog/seed /deploy/seed
+RUN cp /app/templates/blog/astro.config.mjs /deploy/astro.config.mjs
+
+# ---- Runtime ----
+FROM node:22-slim
+
+WORKDIR /app
+COPY --from=build /deploy .
+
+RUN mkdir -p data uploads \
+    && ln -s /app/node_modules/.pnpm/node_modules/kysely /app/node_modules/kysely
+
+ENV HOST=0.0.0.0
+ENV PORT=4321
+EXPOSE 4321
+
+CMD ["node", "./dist/server/entry.mjs"]