docker build reference code example

Example 1: docker build

docker build -t [tag] .

Example 2: docker build -t

--tag , -t   ---->   Name and optionally a tag in the ‘name:tag’ format

Example 3: dockerfile env variabes

FROM busybox
ENV foo /bar
WORKDIR ${foo}   # WORKDIR /bar
ADD . $foo       # ADD . /bar
COPY \$foo /quux # COPY $foo /quux