1.3 KiB
1.3 KiB
| title | category | layout |
|---|---|---|
| Dockerfile | Devops | 2017/sheet |
Reference
{: .-three-column}
Inheritance
FROM ruby:2.2.2
Variables
ENV APP_HOME /myapp
RUN mkdir $APP_HOME
Initialization
RUN bundle install
WORKDIR /myapp
VOLUME ["/data"]
# Specification for mount point
ADD file.xyz /file.xyz
COPY --chown=user:group host_file.xyz /path/container_file.xyz
Onbuild
ONBUILD RUN bundle install
# when used with another file
Commands
EXPOSE 5900
CMD ["bundle", "exec", "rails", "server"]
Entrypoint
ENTRYPOINT ["executable", "param1", "param2"]
ENTRYPOINT command param1 param2
# an ENTRYPOINT allows you to configure a container that will run as an executable.
ENTRYPOINT exec top -b
# this form will use shell processing to substitute shell environment variables, and will ignore any CMD or docker run command line arguments
Metadata
LABEL "com.example.vendor"="ACME Incorporated"
LABEL com.example.label-with-value="foo"
LABEL version="1.0"
LABEL description="This text illustrates \
that label-values can span multiple lines."
# add a metada
See also
{: .-one-column}