Declare env variable which value include space for docker/docker-compose

Question

I have an env variable value like this:
TEST_VAR=The value

Do anybody knowns whether this is legal? should I place \" around the value

Answer 1

In Dockerfile use doublequotes, do not use singlequotes because they do not expand variables inside, excerp from passing buildargs/envs to dockerfile and into a python script below:

ARG HOST="welfare-dev testapi"
ENV HOST "${HOST}"
ARG SITENAME="Institusjon"
ENV SITENAME "${SITENAME}"
RUN cd ${TESTDIR}/sensiotools/sensiotools && cd test && \
  ./testapi-events.py --activate --sitename="${SITENAME}" --host="${HOST}" --dbcheck --debug --wait=0.5 && \
  ./testapi-events.py --deactivate --sitename="${SITENAME}" --host="${HOST}" --dbcheck --debug