FROM ubuntu - Which image to pull down
RUN /bin/command - Command to run
CMD ['/bin/bash', 'start.sh'] - Command to be executed
ENTRYPOINT ['/bin/bash, '-c', 'echo bush'] - Entrypoint to the container
EXPOSE 8080 - Expose port 8080 on the container to the host
ENV HOST=https://www.google.com - Set environment variable
WORKDIR /var/www - Set work directory
COPY index /var/lib/index - Copy files from host to container
COPY . . - Copy contents of host folder to WORKDIR
ADD app /opt/app - Copy contents from host to a new volume on container
USER user - Run as user
VOLUME /root/home - Specify volume
docker build -t <name> .