Important Docker Commands

// Build docker file with a given tag
docker build -t {tag-name} {docker-location}
example -> docker build -t node-app-test .

//run docker in interactive mode
docker run -it -p {exposed-machine-port}:{application-port} {tag-name}
example -> docker build -t 9000:3000 node-app-text

// run container in the background/detach mode
docker run -d -p {exposed-machine-port}:{application-port} {tag-name}

// example of running docker container with listening to the current directory
 docker run -d -p 9010:5000 --name qr_menu_backend -v $(pwd):/app qr_menu_backend

// list all container
docker ps -a

docker stop {container-id}

// start existing docker container in interactive mode
docker start -i {container-id}

docker restart {container-id}

//remove docker container
docker rm {docker-id}

//list all existing docker images
docker images

// remove docker image
docker image rm {image_id}

//show docker list
docker ps

// run docker run in volume mode, for the example below, any changes on the current directory will be affected the files inside the app folder
docker run -it/-d -p {} -v $(pwd):/app {tag-name}

//cheat sheet link
https://www.docker.com/sites/default/files/d8/2019-09/docker-cheat-sheet.pdf

// In docker, if we want to use the host machine ip address in our application, in our docker-compose file ->
environment:
   DB_ENV: http://${DOCKER_GATEWAY_HOST:-host.docker.internal}:3000
//If the machine is linux based, we need to add the following line to ~/.bashrc (took the 1st ip)
export DOCKER_GATEWAY_HOST="`hostname -I` |awk '{print $1}'  `"