Remove unnecesary files from Dockerfile

Dockerfile

@@ -7,9 +7,8 @@ FROM base as development
 ENV NODE_ENV development
 COPY package.json package-lock.json ./
 RUN npm install
-COPY .babelrc .eslintignore .eslintrc index.js nodemon.json webpack.config.babel.js webpack.config.dev.js webpack.config.prod.js webpack.config.server.js ./
+COPY .babelrc index.js nodemon.json webpack.config.babel.js webpack.config.dev.js webpack.config.prod.js webpack.config.server.js ./
 COPY client ./client
-COPY config ./config
 COPY Intl ./Intl
 COPY server ./server
 CMD ["npm", "start"]