Category: Docker

Docker Build

Posted on May 4, 2018 by ServerOk

docker build command is used to create a docker image from Dockerfile. To create an image, first lets create a working directory and change to the directory.

mkdir ~/my-docker-image
cd ~/my-docker-image

1 2	mkdir ~/my-docker-image cd ~/my-docker-image

Create a file with name Dockerfile

vi Dockerfile

1	vi Dockerfile

Put following content in it

FROM ubuntu:18.04

RUN apt update && apt upgrade -y

CMD ["/bin/bash"]

FROM ubuntu:18.04

RUN apt update && apt upgrade -y

CMD ["/bin/bash"]

Now build the docker image with

docker build -t my-ubuntu .

1	docker build -t my-ubuntu .

This will create a docker image with […]

Installing Docker on Ubuntu 16.04

Posted on March 10, 2018 (March 10, 2018) by ServerOk

To install docker on Ubuntu 16.04, run

wget -qO- https://get.docker.com/ | sh

1	wget -qO- https://get.docker.com/ \| sh

To run docker commands as your user, run

usermod -aG docker your-user

1	usermod -aG docker your-user

Docker […]

Docker Login

Posted on March 3, 2018 by ServerOk

docker login command allows you to login to docker.com. You need to login to docker before you can upload your own images to docker hub. This is also needed if you need to pull down a private image.

root@ok:~# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: serverok
Password: 
Login Succeeded
root@ok:~#

root@ok:~# docker login

Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.

Username: serverok

Password:

root@ok:~#

if you need to login to a different docker registery, for example your company docker registery, […]

portainer – Web based UI for Docker

Posted on February 27, 2018 (October 4, 2020) by ServerOk

Portainer is a web based UI for managing docker. https://portainer.io/ You can run it with command

docker volume create portainer_data
docker run -d -p 8000:8000 -p 9000:9000 --name=portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce

1 2	docker volume create portainer_data docker run -d -p 8000:8000 -p 9000:9000 --name=portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce

Now login to portainer with url http://YOUR_SERVER_IP:9000 docker […]

Docker container stop once the main program it started with stop running. If you start a docker container with console using -ti option, it stop when you disconnect. To avoid process getting stopped, you can detach from the console. This is done by pressing keys

CTRL + P

CTRL + P

Followed by

CTRL + Q

CTRL + Q

You can just press CTRL key, […]

docker images

Posted on February 4, 2018 by ServerOk

docker images command list all docker images (blueprints) available on your server.

root@ok:~# docker images
REPOSITORY                     TAG                 IMAGE ID            CREATED             SIZE
gcr.io/tensorflow/tensorflow   latest              04f0b1131389        9 months ago        1.13GB
tensorflow/tensorflow          1.1.0               04f0b1131389        9 months ago        1.13GB
root@ok:~#

root@ok:~# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

gcr.io/tensorflow/tensorflow latest 04f0b1131389 9 months ago 1.13GB

tensorflow/tensorflow 1.1.0 04f0b1131389 9 months ago 1.13GB

root@ok:~#

[…]

docker-compose

Posted on February 4, 2018 (February 21, 2021) by ServerOk

To run a project

docker-compose up -d

1	docker-compose up -d

Rebuild project and run

docker-compose up --build

1	docker-compose up --build

To stop all containers in the project

docker-compose down

1	docker-compose down

To see list of containers started by docker-compose, run

docker-compose ps

1	docker-compose ps

To get container id for a container started by docer-compose, run

docker-compose ps -q NAME_OF_SERVICE

1	docker-compose ps -q NAME_OF_SERVICE

Example

root@ee:/opt/easyengine/services# docker-compose ps
            Name                           Command               State                    Ports                  
-----------------------------------------------------------------------------------------------------------------
services_global-db_1            docker-entrypoint.sh mysqld      Up      3306/tcp                                
services_global-nginx-proxy_1   /app/docker-entrypoint.sh  ...   Up      0.0.0.0:443->443/tcp, 0.0.0.0:80->80/tcp
services_global-redis_1         docker-entrypoint.sh redis ...   Up      6379/tcp                                
root@ee:/opt/easyengine/services# docker-compose ps -q global-nginx-proxy
140191cb36add7be4f993bbff4a0f8a054d0985486831fcc669a80a577988a92
root@ee:/opt/easyengine/services#

root@ee:/opt/easyengine/services# docker-compose ps

Name Command State Ports

-----------------------------------------------------------------------------------------------------------------

services_global-db_1 docker-entrypoint.sh mysqld Up 3306/tcp

services_global-nginx-proxy_1 /app/docker-entrypoint.sh ... Up 0.0.0.0:443->443/tcp, 0.0.0.0:80->80/tcp

services_global-redis_1 docker-entrypoint.sh redis ... Up 6379/tcp

root@ee:/opt/easyengine/services# docker-compose ps -q global-nginx-proxy

140191cb36add7be4f993bbff4a0f8a054d0985486831fcc669a80a577988a92

root@ee:/opt/easyengine/services#

docker-compose: error while loading shared libraries Docker compose start container on boot […]

Docker Delete all images

Posted on February 4, 2018 (February 4, 2018) by ServerOk

Before you can delete a docker image, you need to delete any container that is based on this image. So see how to delete all docker containers, see Delete all docker containers To list all available docker images, run

docker images

1	docker images

To just display image ID only, run with -q option

docker images -q

1	docker images -q

Now lets pass the […]

Delete all docker containers

Posted on February 4, 2018 by ServerOk

We need to use diff commands to to do this. First lets get list of all containers.

docker ps -a -q

1	docker ps -a -q

This will list all docker containers available. Before we can delete, we need to stop them. To stop all running containers, use

docker stop $(docker ps -q)

1	docker stop $(docker ps -q)

To delete all containers, run

docker rm $(docker ps -a -q)

1	docker rm $(docker ps -a -q)

[…]

Docker Build

Installing Docker on Ubuntu 16.04

docker search

portainer – Web based UI for Docker

Docker detach container

docker images

docker-compose

Docker Delete all images

Delete all docker containers