Images

Check existing images

docker images

Get mongo version 4.1

docker pull mongo:4.1

Remove an existing image

docker image rm mongo:4.2.5

Container

Get running container

docker container ls

Get all (running + non-running) container

docker container ls -all

Create container with random name, expose port 27000, map to 27017

docker container create -p 27000:27017 mongo:4.2.5

Create container with specific name, expose port 27000, map to 27017

docker container create --name mongoserver1 -p 27000:27017  mongo:4.2.5

Run created container

docker container start mongoserver1

Enter the container via bash

docker exec -t -i web /bin/bash

Stop a running containers

docker container stop mongoserver1 mongoserver2

Remove a container

docker container rm mongoserver1 mongoserver2

Sample of Dockerfile contents

FROM golang:1.14.2

# COPY source target (the target is our docker image)
COPY main.go /app/main.go

CMD ["go", "run", "/app/main.go"]

Install php extensions

RUN docker-php-ext-install curl

Install and enable pecl extensions

RUN pecl install memcached \
    && docker-php-ext-enable memcached

Build an image from a Dockerfile, this has to be run in a folder containing the Dockerfile

Please pay attention to the last dot!

docker build --tag app-golang:1.0 .

Create a container for our built image!

docker container create --name app-golang -p 8080:8080 app-golang:1.0

Push our image to docker registry, first create a repository in the registry

https://hub.docker.com/repository/create

Then create a new image tag from the existing image

docker tag app-golang:1.0 docker_hub_username/app-golang:1.0

Then login to docker registry via terminal

docker login

Then use the push command displayed after creating the above repository

docker push docker_hub_username/app-golang:1.0

Push to docker registry

docker build --tag budiantoip/php-fpm:5.6.40-bitnami-dev .
docker push budiantoip/php-fpm:5.6.40-bitnami-dev

Logs

Check logs of an existing container

docker container logs app-golang

Environment Variables

Create a container and set the environment variables!

docker container create --name app-golang -p 8080:8080 -e NAME=Docker app-golang:1.0

Set another environment variables

docker container create --name app-golang -p 8080:8080 -e NAME=Docker -e APP=golang -e PASSWORD=rahasia app-golang:1.0

Inspect

Inspect a docker container

docker container inspect app-golang

Network

docker network --help

docker network create golang_network

docker network ls

docker network golang_network mongo
docker network golang_network redis
docker network connect golang_network app-golang

Check whether mongo is connected into golang_network

docker container inspect mongo

Restart any started docker containers after creating the network!

Volume

Create volume for mongo and assign the volume

docker volume create mongo_data

Attach the volume

docker container create --name mongoserver1 -p 27000:27017 -v mongo_data:/data/db mongo mongo:4.2.5

Or store it in /Users/username/Desktop/mongodb folder

docker container create --name mongoserver1 -p 27000:27017 -v /Users/username/Desktop/mongodb:/data/db mongo mongo:4.2.5

Docker Compose

rebuild the built container using docker-compose

docker-compose up -d --no-deps --build web

Prune

This will remove dangling components

docker container prune
docker image prune
docker volume prune
docker system prune

Get component's disk usage

docker system df

budiantoip/Dockerfile Snippets.md