test docker

.dockerignore

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+node_modules
+build
+.dockerignore
+Dockerfile
+Dockerfile.prod

Dockerfile

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+# pull official base image
+FROM node:13.12.0-alpine
+
+# set working directory
+WORKDIR /src
+
+# add `/app/node_modules/.bin` to $PATH
+ENV PATH /node_modules/.bin:$PATH
+
+# install app dependencies
+COPY package.json ./
+COPY package-lock.json ./
+RUN npm install --silent
+RUN npm install react-scripts@3.4.1 -g --silent
+
+# add app
+COPY . ./
+
+# start app
+CMD ["npm", "start"]