Make Containerfile self contained

Author: Paulo Guilherme Pinheiro Pereira

packaging/container/Containerfile

@@ -1,3 +1,11 @@
+# Stage 1: Node.js builder
+FROM node:lts-alpine3.23 AS builder
+
+WORKDIR /app
+COPY . .
+RUN npm install && export PATH=./node_modules/.bin:$PATH && npm run build-stylus && npm run build-riot && npm run concat-riot
+
+# Stage 2: Python/Django
 FROM almalinux:10-minimal
 
 RUN microdnf install -y tar gzip
@@ -17,4 +25,5 @@ RUN uv sync --all-extras --frozen
 
 
 WORKDIR /app
+COPY --from=builder /app /app
 ENTRYPOINT ["/bin/bash", "-c"]