020-Dockerfile.arg.sample

FROM alpine:3.9
# Do
# Use default value
ARG AUTHOR="Raju Gandhi"
ARG BUILD_DATE
ARG VCS_REF

RUN echo ${AUTHOR}
RUN echo ${BUILD_DATE}

# USAGE
# default author
# docker build -f 020-Dockerfile.arg.sample -t test .
# set author at build time
# docker build --build-arg AUTHOR="Solomon Hykes" -f 020-Dockerfile.arg.sample -t test .