Dockerfile for private repo

Dockerfile-private-repo

FROM python:3.9-rc-buster as intermediate

COPY requirements.txt /app/
WORKDIR /app

ARG SSH_PRIVATE_KEY

# ssh setup
RUN mkdir /root/.ssh/
RUN echo "${SSH_PRIVATE_KEY}" >> /root/.ssh/id_rsa && chmod 600 /root/.ssh/id_rsa
RUN touch /root/.ssh/known_hosts
RUN ssh-keyscan -t rsa github.com >> /root/.ssh/known_hosts

ENV VIRTUAL_ENV=/opt/venv
ENV PATH="$VIRTUAL_ENV/bin:$PATH"
RUN python3 -m venv $VIRTUAL_ENV
RUN pip3 install -r requirements.txt

FROM python:3.9-rc-buster

COPY --from=intermediate /opt/venv /opt/venv

ENV VIRTUAL_ENV=/opt/venv
ENV PATH="$VIRTUAL_ENV/bin:$PATH"
WORKDIR /app
COPY . /app

Building

export SSH_PRIVATE_KEY=$(cat /path/to/private.key)
docker build -t mytest:latest --build-arg SSH_PRIVATE_KEY="${SSH_PRIVATE_KEY}" .
unset SSH_PRIVATE_KEY