Update Dockerfile to install Node packages

Dockerfile

@@ -1,3 +1,11 @@
+FROM node:latest
+
+WORKDIR /usr/src/
+
+COPY mojo_app/package.json .
+COPY mojo_app/package-lock.json .
+RUN npm install
+
 FROM perl:latest
 
 WORKDIR /opt/app/
@@ -8,9 +16,9 @@ COPY mojo_app ./mojo_app/
 
 RUN cpanm Carton && carton install
 
+WORKDIR /opt/app/mojo_app/
+COPY --from=0 /usr/src/ .
+
 EXPOSE 3000
 
-WORKDIR /opt/app/mojo_app/
-
 ENTRYPOINT ["carton", "exec", "--", "morbo", "script/mojo_app"]
-