Merge pull request #1172 from Kaggle/add_7z

Add support for 7zip

Author: SohierDane

Dockerfile.tmpl

@@ -59,7 +59,7 @@ RUN sed -i "s/httpredir.debian.org/debian.uchicago.edu/" /etc/apt/sources.list &
     apt-get update && \
     # Needed by lightGBM (GPU build)
     # https://lightgbm.readthedocs.io/en/latest/GPU-Tutorial.html#build-lightgbm
-    apt-get install -y build-essential unzip cmake libboost-dev libboost-system-dev libboost-filesystem-dev && \
+    apt-get install -y build-essential unzip cmake libboost-dev libboost-system-dev libboost-filesystem-dev p7zip-full && \
     # b/182601974: ssh client was removed from the base image but is required for packages such as stable-baselines.
     apt-get install -y openssh-client && \
     /tmp/clean-layer.sh

tests/test_7z.py

@@ -0,0 +1,8 @@
+import subprocess
+import unittest
+
+
+class Test7z(unittest.TestCase):
+    def test_basic(self):
+        result = subprocess.run('which 7z', shell=True, capture_output=True)
+        assert len(result.stdout) > 0