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dockercopy

Copy . . in dockerfile

I understand that COPY can copy files from source folder to destination, but what is purpose of COPY . .?

For example:

FROM ruby:2.5.1
WORKDIR /usr/src/app
COPY Gemfile Gemfile.lock ./
RUN bundle install
COPY . .
CMD ["./your-daemon-or-script.rb"]
Solution

  • That will copy the current working directory of your local machine into the current working directory of the container.