diff --git a/bin/test-python-2.6 b/bin/test-python-2.6
new file mode 100755
index 0000000..c3da582
--- /dev/null
+++ b/bin/test-python-2.6
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+cd ..
+exec ./containers/python-2.6/run bash -c \
+     'cd skyfield && ls && assay --batch skyfield/tests'
diff --git a/containers/python-2.6/Dockerfile b/containers/python-2.6/Dockerfile
index 7d2bc7b..69d05a3 100644
--- a/containers/python-2.6/Dockerfile
+++ b/containers/python-2.6/Dockerfile
@@ -2,8 +2,7 @@ FROM mrupgrade/deadsnakes:2.6
 RUN apt update
 RUN apt install -y -y build-essential python2.6-dev
 RUN pip install numpy==1.11.3
-RUN pip install argparse mock pytz unittest2
+RUN pip install argparse certifi jplephem mock pytz sgp4 unittest2
 RUN pip install https://github.com/brandon-rhodes/assay/archive/master.zip
-RUN pip install skyfield
-RUN echo 'assay --batch skyfield.tests' > /root/.bash_history
+RUN echo 'PYTHONPATH=.. assay --batch skyfield.tests' > /root/.bash_history
 CMD cd skyfield/ci && /bin/bash