final checks and fixes for launch

sass/Dockerfile

@@ -0,0 +1,12 @@
+# Use an official Node.js image as a base
+FROM node:16-slim
+
+# Install Sass globally
+RUN npm install -g sass \
+    && npm cache clean --force
+
+# Set working directory inside container
+WORKDIR /usr/src/app
+
+# Set entrypoint to Sass CLI
+ENTRYPOINT ["sass"]