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Docker's integrated image building system

$ cat Dockerfile
FROM busybox:latest
CMD echo Hello World!!

$ sudo docker build .

$ sudo docker run 0a2abe57c325

$ sudo docker images

$ sudo docker tag 0a2abe57c325 busyboxplus

$ sudo docker build -t busyboxplus .

$ sudo docker images
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The Dockerfile build instructions

$ sudo docker build -t cmd-demo .

$ sudo docker run cmd-demo

$ sudo docker run cmd-demo echo Override CMD demo

$ sudo docker build -t entrypoint-demo .

$ sudo docker run entrypoint-demo

$ sudo docker run entrypoint-demo with additional arguments

$ sudo docker run --entrypoint="/bin/sh" entrypoint-demo
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A brief overview of the Docker image management


$ sudo docker build -t apache2 .

$ sudo docker history apache2

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