docker cmd

docker build

docker build --tag panlm/ntnx:app2 .
docker run -d --name app2 -p 5000:5000 app2
docker login -u panlm
docker push panlm/ntnx:app2

docker pull panlm/ntnx:app2
docker run -d --name app2 -p 5000:5000 panlm/ntnx:app2

docker exec -it app2 /bin/bash

docker-buildx-

• download binary from https://github.com/docker/buildx/
  

  mkdir -p ~/.docker/cli-plugins
  mv <buildx> ~/.docker/cli-plugins/docker-buildx
  chmod a+x ~/.docker/cli-plugins/docker-buildx
  

• check qemu emulators
  

  docker buildx ls
  docker run -t --rm --privileged tonistiigi/binfmt --install all
  docker buildx create --use --platform=linux/arm64,linux/amd64 --name multi-platform-builder
  docker buildx inspect --bootstrap
  

• build multi arch
  

  docker buildx build \
  --platform linux/amd64,linux/arm64 \
  -t 123456789012.dkr.ecr.us-east-2.amazonaws.com/osarch:latest \
  --push .
  

• refer: ../../../../WebClip/How to quickly setup an experimental environment to run containers on x86 and AWS Graviton2 based Amazon EC2 instances
• refer: multi-architecture-image

docker image

clean

docker image prune -a

samples

flask app

• python_app.py
  

  #!/usr/bin/env python3
  from flask import Flask
  import os
  
  app = Flask(__name__)
  @app.route('/')
  def index():
      return f"{{ OS Architecture: {os.uname().machine} }}"
  
  if __name__ == '__main__':
      app().run(host='0.0.0.0')
  

• Dockerfile
  

  FROM public.ecr.aws/bitnami/python:3.7
  EXPOSE 5000
  WORKDIR /
  COPY ./python_app.py /app.py
  RUN pip install flask
  CMD ["flask", "run", "--host", "0.0.0.0"]
  

• create repo ../awscli/ecr-cmd

• build
  

  echo ${REPO_URI}
  docker build -t ${REPO_URI}:latest .
  docker push ${REPO_URI}:latest
  

• docker run for testing
  

  docker run --rm -d -p 8080:5000 --name osarch ${REPO_URI}:latest
  

build-colorapp-

• v1
  

  export AWS_DEFAULT_REGION=$(curl -s 169.254.169.254/latest/dynamic/instance-identity/document |jq -r '.region')
  export AWS_ACCOUNT_ID=$(aws sts get-caller-identity --query Account --output text)
  ECR_URL=${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_DEFAULT_REGION}.amazonaws.com
  
  aws ecr get-login-password --region ${AWS_DEFAULT_REGION} | docker login --username AWS --password-stdin ${ECR_URL}
  
  cd /tmp
  git clone https://github.com/sanjeevrg89/samplecolorapp.git
  cd samplecolorapp
  
  PROJ_NAME=sample
  APP_NAME=colorapp
  ECR_IMAGE_NAME=${ECR_URL}/${PROJ_NAME}/${APP_NAME}
  aws ecr create-repository \
  --repository-name ${PROJ_NAME}/${APP_NAME}
  docker build . -t ${ECR_IMAGE_NAME}:v1
  docker push ${ECR_IMAGE_NAME}:v1
  

• v2
  

  cd v2
  docker build . -t ${ECR_IMAGE_NAME}:v2
  docker push ${ECR_IMAGE_NAME}:v2
  

• refer: https://github.com/sanjeevrg89/samplecolorapp

ubuntu-based

FROM python:2.7
#RUN ["apt-get", "update"]
#RUN ["apt-get", "install", "-y", "vim"]
COPY . /app
WORKDIR /app
RUN pip install -r requirements.txt
EXPOSE 5000
CMD python ./app.py

centos-based

FROM centos:7
RUN ["yum", "install", "-y", "epel-release", "gcc", "python-devel", "python2-pip"]
RUN ["rpm", "-Uvh", "https://repo.mysql.com/mysql80-community-release-el7-3.noarch.rpm"]
RUN ["yum", "install", "-y", "--enablerepo=mysql80-community", "mysql-community-devel"]
COPY . /app
WORKDIR /app
RUN pip install -r requirements.txt
EXPOSE 5000
CMD python ./app.py

docker run

• docker-run
  

  docker run --restart=unless-stopped redis
  

docker push

• https://docs.aws.amazon.com/AmazonECR/latest/userguide/docker-push-ecr-image.html

docker environment variable

https://phoenixnap.com/kb/docker-environment-variables

ENV SPARK_VERSION=3.3.3

compose

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