App & Test container Dockerfile

Dockerfile

FROM "<bases image>":"<version>"

WORKDIR "<path>"

# install packages required to run app and tests
RUN apt-get update && apt-get install -y \
    "<app runtime> and <dependencies>" \  # add app runtime and required packages
    "<test tools> and <dependencies>" \     # add testing tools and required packages
    && rm -rf /var/lib/apt/lists/*

# copy app files
COPY app app
COPY run.sh run.sh

# copy test scripts
COPY tests tests

# copy "main" test command
COPY test.sh test.sh

# ... EXPOSE, RUN, ADD ... for app and test environment

# main app command
CMD [run.sh, "<app arguments>"]

# it's not possible to have multiple CMD commands, but this is the "main" test command
# CMD [/test.sh, "<test arguments>"]