104 lines
2.8 KiB
Markdown
104 lines
2.8 KiB
Markdown
# Docker
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### connect to running container
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```bash
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docker exec -it <container-name> bash
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```
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### start stopped container. See <stopped-container-name> with docker ps -a
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```bash
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docker start <stopped-container-name>
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```
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### pytorch; standard container
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```bash
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docker run -it --gpus all pytorch/pytorch:latest bash
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docker run -d --gpus all pytorch/pytorch:latest # run as deamon
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```
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docker logs -f
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### docker ipaddress or running container
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docker inspect <containernameorid>| grep '"IPAddress"' | head -n 1</containernameorid>
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### run iterative python program directly
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docker run --rm -v $(pwd):/src --rm python:latest python /src/hello-world.py
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### run iterative python shell
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docker run --rm -it -v $(pwd):/src --rm python:latest python
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### run bash inside python container
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docker run --rm -it -v $(pwd):/src --rm python:latest /bin/bash
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### run a daemon with option -d
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```bash
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docker run --rm --name my-postgres -e POSTGRES_PASSWORD=qw12aap -d postgres:latest
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docker exec -it my-postgres psql -h localhost -U postgres -d postgres
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```
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### docker files
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```dockerfile
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FROM python:latest
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RUN pip3 install numpy
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CMD python3 /src/hello-world.py
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```
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### docker networks
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Usage: docker network COMMAND
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Commands:
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connect Connect a container to a network
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create Create a network
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disconnect Disconnect a container from a network
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inspect Display detailed information on one or more networks
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ls List networks
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prune Remove all unused networks
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rm Remove one or more networks
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```bash
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docker network create net_1
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docker run --rm -d --net net_1 --name my_py -v $(pwd):/src python:latest python3 /src/run.py
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docker run --rm -it --net net_1 alpine:latest /bin/bash
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docker network create net_2
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docker run --rm --name my-postgres --network net_2 -e POSTGRES_PASSWORD=qw12aap -d postgres:latest
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docker run -it --rm --name my_postgre2 --network net_2 postgres:latest /bin/bash
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```
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inside: psql -U postgres -h my-postgres
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### Docker Compose
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```docker-compose
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version: '3'
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services:
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python:
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image: python:latest
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container_name: my_py
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volumes:
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- .:/src
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command: python3 /src/run.py
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restart: always
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postgres:
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image: postgres:latest
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container_name: my_post
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environment:
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- e POSTGRES_PASSWORD=qw12aap
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restart: always
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alpine:
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image: alpine:latest
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command: echo "hello from alpine"
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restart: always
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```
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[How To Remove Docker Images, Containers, and Volumes](https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes)
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[How to Troubleshoot “Cannot Connect to the Docker Daemon” Errors](https://www.howtogeek.com/devops/how-to-troubleshoot-cannot-connect-to-the-docker-daemon-errors/)
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