Preparing for separate admin

Dockerfile

@@ -45,7 +45,11 @@ RUN apk add --no-cache python3 && \
 COPY --from=builder /app/dist ./
 COPY --from=builder /app/static ./static
 COPY medusa-config.js develop.sh tsconfig.json ./
-  
-EXPOSE 9000
+
+# Set environment variable for the port (default is optional)
+ENV PORT=9000
+
+# Make the port configurable at runtime
+EXPOSE ${PORT}
 
 ENTRYPOINT ["./develop.sh", "start"]