# Docker

###### tags: `SCh-20.35_23.11.2021_Applications Environment Security` `docker`

[Docker - setup](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-20-04)

[Docker compose - setup](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-compose-on-ubuntu-20-04-ru)

## Step 1 — Installing Docker

`sudo apt update`

install a few prerequisite packages which let apt use packages over HTTPS:

`sudo apt install apt-transport-https ca-certificates curl software-properties-common`

Then add the GPG key for the official Docker repository to your system:

`curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -`

Add the Docker repository to APT sources:

`sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"`

Make sure you are about to install from the Docker repo instead of the default Ubuntu repo:

`apt-cache policy docker-ce`

> Output of apt-cache policy docker-ce
>
> ```
> docker-ce:
> Installed: (none)
> Candidate: 5:19.03.9~3-0~ubuntu-focal
> Version table:
> 5:19.03.9~3-0~ubuntu-focal 500
> 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages
> ```
>

Finally, install Docker:

`sudo apt install docker-ce`

Check that it’s running:

`sudo systemctl status docker`

The output should be similar to the following, showing that the service is active and running:

> Output
> ● docker.service - Docker Application Container Engine
> Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
> Active: active (running) since Tue 2020-05-19 17:00:41 UTC; 17s ago
> TriggeredBy: ● docker.socket
> Docs: https://docs.docker.com
> Main PID: 24321 (dockerd)
> Tasks: 8
> Memory: 46.4M
> CGroup: /system.slice/docker.service
> └─24321 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

## Step 2 — Executing the Docker Command Without Sudo (Optional)

If you want to avoid typing sudo whenever you run the docker command, add your username to the docker group:

`sudo usermod -aG docker ${USER}`

To apply the new group membership, log out of the server and back in, or type the following:

`su - ${USER}`

You will be prompted to enter your user’s password to continue.

Confirm that your user is now added to the docker group by typing:

`groups`

> Output
> sammy sudo docker

If you need to add a user to the docker group that you’re not logged in as, declare that username explicitly using:

`sudo usermod -aG docker username`

# install docker-compose

`apt install docker-compose`

# Create Docker
## Create Docker image

cd /opt/mydockerbuild

nano dockerfile

# ---
# Kaspersky update utility 4.0
#ubuntu ver 
FROM ubuntu:21.10
LABEL maintainer="[e-mail]"

# install soft
RUN apt-get update && \
    apt-get -yq install cron && apt-get install vim -y && apt-get install wget -y

# setup working dir
WORKDIR /opt/kuu

RUN wget https://products.s.kaspersky-labs.com/special/kasp_updater3.0/4.1.0.474/english-4.1.0.474/3530393035317c44454c7c31/kuu4.1.0.474_x86_64_en.tar.gz  && \ 
    tar xvzf kuu4.1.0.474_x86_64_en.tar.gz && rm kuu4.1.0.474_x86_64_en.tar.gz && rm /opt/kuu/updater.ini

COPY updater.ini /opt/kuu/updater.ini 
COPY kavupdater.sh /usr/bin/kavupdater.sh

# Giving executable permission to script file.
RUN chmod +x /usr/bin/kavupdater.sh && useradd -ms /bin/bash kladmin && \
    chown -R kladmin:kladmin /opt/kuu/ && mkdir /opt/Updates && mkdir /opt/Temp && \
    mkdir /opt/logs && chown -R kladmin:kladmin /opt/Updates && \
    chown -R kladmin:kladmin /opt/Temp && chown -R kladmin:kladmin /opt/Updates && chown -R kladmin:kladmin /opt/Temp

# setup cron
COPY kavupdater_cron /etc/cron.d/kavupdater_cron
RUN chmod 0644 /etc/cron.d/kavupdater_cron && crontab /etc/cron.d/kavupdater_cron && \ 
     crontab /etc/cron.d/kavupdater_cron && touch /var/log/cron.log

## Docker build

docker image build -t docker_kaspersky_uu4.0 .

docker tag local-image:tagname new-repo:tagname
docker push new-repo:tagname

## Create Repository in Docker Hub

[Create Repository](http://dker.ru/docs/docker-engine/get-started-with-docker/create-a-docker-hub-account-repository/)

## Push image to repository

[Docker Push](https://dker.ru/docs/docker-engine/get-started-with-docker/tag-push-pull-your-image/)

### create version of docker image

docker tag 6c2156c2d3a0 vladimirfp/docker_kaspersky_uu4.0:latest

docker images

### login to docker hub

docker login

### push repository

docker push vladimirfp/docker_kaspersky_uu4.0

## Remove images

docker rmi -f IMAGE_ID

## Docker pull

`docker run vladimirfp/docker_kaspersky_uu4.0`

`docker run -v /opt/Updates:/opt/Updates -it vladimirfp/docker_kaspersky_uu4.0 bash`

[Docker cron](https://stackoverflow.com/questions/37458287/how-to-run-a-cron-job-inside-a-docker-container)

[Docker mount directory](https://towardsdatascience.com/how-to-mount-a-directory-inside-a-docker-container-4cee379c298b)

[Docker](https://habr.com/ru/company/ruvds/blog/440658/)

# Остановить все Docker контейнеры.
`docker stop $(docker ps -a -q)`

# Удалить все Docker контейнеры
`docker rm $(docker ps -a -q)`

# Удалить все Docker images
`docker rmi $(docker images -q)`