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Docker Fundamentals

Posted by Kylin Soong on Nov 6, 2015 categorized as docker

The contents/commands come from Self-Paced Online Learning in https://training.docker.com/self-paced-training.

  • Build New Image
$ docker run -i -t ubuntu:14.04 /bin/bash
root@71b780671c3f:/# apt-get install curl
$ docker commit 71b780671c3f kylin/curl:1.0
$ docker images
  • Use New Image
$ docker run -i -t kylin/curl:1.0 /bin/bash
root@d07c1801d7a4:/# which curl
/usr/bin/curl
  • Build image from Dockerfile

Step.1 create Dockerfile with content

FROM ubuntu:14.04
RUN apt-get update
RUN apt-get install -y curl
RUN apt-get install -y vim

Step.2 build

$ docker build -t kylin/testimage:1.0 .

Step.3 verify and test

$ docker images
$ docker run -it kylin/testimage:1.0 /bin/bash
root@d0d80495620a:/# vim test

Step.4 Write Dockerfile with aggregate way

FROM ubuntu:14.04
RUN apt-get update && apt-get install -y curl \
                                         vim