docker-compose build failure under proxy

[yosshiki]

I couldn't docker-compose at step7 "Starting OperationHub".
probably because the building container cannot run "git clone" over the proxy.

how can I build operation hub under the proxy?

Logs is below.

docker-compose build
---
Building jupyterhub
Step 1/12 : FROM jupyterhub/jupyterhub:1.0.0
...
Step 5/12 RUN pip --no-cache-dir install git+https://github.com/NII-cloud-operation/Jupyter-LC_nblineage.git
...
  Running command git clone -q https://github.com/NII-cloud-operation/Jupyter-LC_nblineage.git /tmp/pip-req-build-m32fmpqv
  fatal: unable to access 'https://github.com/NII-cloud-operation/Jupyter-LC_nblineage.git' : server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
ERROR: Command "git clone -q https://github.com/NII-cloud-operation/Jupyter-LC_nblineage.git /tmp/pip-req-build-m32fmpqv" failed with error code 128 in None
ERROR: Service ' jupyterhub' failed to build: The command '/bin/sh -c pip --no-cache-dir install git+https://github.com/NII-cloud-operation/Jupyter-LC_nblineage.git' returned a non-zero code: 1

I tried adding these option but the result was the same.
--build-arg http_proxy=http://(myproxyserver):(port)
--build-arg https_proxy=http://(myproxyserver):(port)
--build-arg GIT_SSL_NO_VERIFY=1
--build-arg GIT_SSL_VERSION=tlsv1.2

I confirmed myproxy has no problem because I could run 'pip install' and 'git clone' from hostOS under the proxy.

Thank you.