8.1 Pakaging Git with a Dockerfile

Name the new file Dockerfile. Write the following five lines and then save the file:

# An example Dockerfile for installing Git on Ubuntu
FROM ubuntu:latest
LABEL maintainer="dia@allingeek.com"
RUN apt-get update && apt-get install -y git
ENTRYPOINT ["git"]

build a new image with the Dockerfile
don’t forget the ‘.’ , represent the current directory

docker image build --tag ubuntu-git:auto .

now you can run a Git command using the new image:

docker container run --rm ubuntu-git:auto