Dockerfile

Dockerfile

Best practices for writing Dockerfiles

Dockerfile reference Erstellen eines Docker Image

 Dockerfile >> *Build* >> Docker Image >> *Run* >>> Docker Container

# BASIS IMAGE

  FROM alpine:latest 
  LABEL name="test alpine" 
  LABEL version="1.0" 
  LABEL description="a new alpine image" 
  LABEL maintainer="robopagex.com" 

RUN execute on build, multiple run possible

  RUN echo "HELLO" 
  RUN apt-get update && \ 
      apt-get upgrade -y 

Only one at the end

  CMD ["/bin/bash"] 
  CMD ["echo","Hello"] 
  CMD ["com","arg","arg"] 

Overwrite CMD IP with robopagex.com

  ENTRYPOINT ["/bin/ping"]
  CMD ["127.0.0.1"] 
  docker run -it myalpine robopagex.com

  CMD ["/bin/ping","127.0.0.1"] 
  docker run -it myalpine robopagex.com

  CMD ["/bin/ping","127.0.0.1"] 
  docker run -it myalpine bash

  FROM alpine:latest 
  RUN mkdir -p /app 
  COPY . /app 

JUMP INTO WORKDIR

  WORKDIR /app 
  docker run -it myalpine

  FROM alpine:latest 
  ENV name TEST 
  RUN echo "Hello, $name" 

  ENV nginx_conf /app/myconf.conf