add dependencies from personal repo

compose/linode/docs/Dockerfile

@@ -14,15 +14,19 @@ RUN apt-get update && apt-get install --no-install-recommends -y \
   build-essential \
   # psycopg2 dependencies
   libpq-dev \
-  # cleaning up unused files
+    git \
+    openssh-client \
+    # cleaning up unused files
   && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
   && rm -rf /var/lib/apt/lists/*
 
 # Requirements are installed here to ensure they will be cached.
 COPY ./requirements /requirements
 
+RUN mkdir -p -m 0700 ~/.ssh && ssh-keyscan home.ascorrea.com >> ~/.ssh/known_hosts
+
 # create python dependency wheels
-RUN pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels  \
+RUN --mount=type=ssh,id=git_ssh_key pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels  \
   -r /requirements/local.txt -r /requirements/production.txt \
   && rm -rf /requirements