Docker

Tutorials

Learning

• Docker Context | Docker Documentation
• Dockerfile - ENV與ARG參數 · Docker學習筆記

Dockerfile Best Practices

• Best practices for writing Dockerfiles | Docker Documentation

• Speed Up Your Development Flow With These Dockerfile Best Practices | Docker

How-Tos

• Run x86 Docker containers with Rosetta on Mac | Level Up Coding ⇒ 影響套件: geopandas, pillow Feb 9, 2023

start docker service

yum (AWS Linux)

sudo service docker start

install docker compose (if compose not in default command)

get latest version script

sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
# verify
docker-compose version

make docker autostart

$-> sudo chkconfig docker on

I strongly recommend install also: git (sudo yum install -y git)

$-> sudo reboot # only if for you it is neccesary

ARG & ENV

FROM之前的ARG只有用在FROM那一句，FROM之後就會是空白，所以如果要使用ARG或ENV就還要再FROM之後宣告一次，ARG只存在build image，ENV存在build & run time。

ARG POSTGRES_VERSION
ARG DEBIAN_RELEASE

FROM postgres:${POSTGRES_VERSION}-${DEBIAN_RELEASE}

ARG POSTGRES_VERSION

RUN echo ${POSTGRES_VERSION}

Python

python-env-series Archives | Docker

• Containerized Python Development - Part 1 | Docker

• multi stage (builder & slim)

• Containerized Python Development - Part 2 | Docker

• docker compose

  • network seperation: frontend & backend

  • secrets (db-password)

• part3: visual studio code debug (pvsd)

Useful commands

Build image by Dockerfile

docker build -t my-image-name .

Run image

docker run -p 8080:80 my-image-name

remove all images

docker rmi $(docker images -a -q)

xxx build --force-rm --no-cache && xx up -d

docker system prune -a

find images by pattern

docker images --filter=reference=""*basdb*"

postgres

show SQL statement

services:
  postgres:
    command: ["postgres", "-c", "log_statement=all"]