During install for dev purpose, I get this message on `docker-compose up` : ``` Building front Step 1/11 : ARG NODE=12.16 Step 2/11 : FROM node:$NODE ---> bdca973cfa07 Step 3/11 : WORKDIR /usr/src/app ---> Using cache ---> ed0d4577c827 Step 4/11 : COPY package*.json ./ ERROR: Service 'front' failed to build: COPY failed: no source files were specified ```