Extract storage package from backend

Author: jdleesmiller

todo/Dockerfile

@@ -3,10 +3,18 @@
 #
 FROM node:12 AS development-backend
 
-RUN mkdir -p /srv/todo/backend && chown -R node:node /srv/todo
+RUN mkdir -p /srv/todo/backend &&\
+  mkdir -p /srv/todo/storage &&\
+  chown -R node:node /srv/todo
 
 USER node
 
+WORKDIR /srv/todo/storage
+
+COPY --chown=node:node storage/package.json storage/package-lock.json ./
+
+RUN npm install --quiet
+
 WORKDIR /srv/todo/backend
 
 COPY --chown=node:node backend/package.json backend/package-lock.json ./
@@ -48,6 +56,8 @@ WORKDIR /srv/todo/backend
 
 COPY --from=development-backend --chown=root:root /srv/todo/backend/node_modules ./node_modules
 
+COPY --from=development-backend --chown=root:root /srv/todo/storage/node_modules ../storage/node_modules
+
 COPY --from=build-frontend --chown=root:root /srv/todo/frontend/dist ./dist
 
 COPY . .