cheatsheet.sh

#Check Memory and CPU usage
docker ps -q | xargs  docker stats --no-stream

Dockerfile

# CRA + Nginx Template 
# Stage 1 - the build process
FROM node:8 as build-deps
WORKDIR /usr/src/app
COPY package.json yarn.lock ./
RUN yarn
COPY . ./
RUN yarn build

# Stage 2 - the production environment
FROM nginx:1.17-alpine
COPY --from=build-deps /usr/src/app/build /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

firewalld.sh

firewall-cmd --permanent --zone=trusted --add-interface=docker0
firewall-cmd --permanent --zone=trusted --add-port=4243/tcp