Add tentative ssh environment to docker image

images/production/Containerfile

@@ -93,13 +93,19 @@ RUN apt-get update \
     gcc \
     build-essential \
     libbz2-dev \
+    # for erpnext repo
+    openssh-ssh \
     && rm -rf /var/lib/apt/lists/*
 
 USER frappe
 
+ARG SSH_PRIVATE_KEY
+RUN mkdir ~/.ssh/
+RUN echo "${SSH_PRIVATE_KEY}" > ~/.ssh/id_ed25519
+
 ARG FRAPPE_BRANCH=version-15
 ARG FRAPPE_PATH=https://github.com/frappe/frappe
-ARG ERPNEXT_REPO=https://github.com/frappe/erpnext
+ARG ERPNEXT_REPO=ssh://git@githaven.org:2222/Shiloh/brotherton-erpnext.git
 ARG ERPNEXT_BRANCH=version-15
 RUN bench init \
   --frappe-branch=${FRAPPE_BRANCH} \