Update docker from 3.6.0 to 3.7.1

requirements/prod.txt

@@ -461,9 +461,9 @@ pyaml==17.12.1 \
 xmltodict==0.11.0 \
     --hash=sha256:add07d92089ff611badec526912747cf87afd4f9447af6661aca074eeaf32615 \
     --hash=sha256:8f8d7d40aa28d83f4109a7e8aa86e67a4df202d9538be40c0cb1d70da527b0df
-docker==3.6.0 \
-    --hash=sha256:666611862edded75f6049893f779bff629fdcd4cd21ccf01d648626e709adb13 \
-    --hash=sha256:145c673f531df772a957bd1ebc49fc5a366bcd55efa0e64bbd029f5cc7a1fd8e
+docker==3.7.1 \
+    --hash=sha256:0076504c42b6a671c8e7c252913f59852669f5f882522f4d320ec7613b853553 \
+    --hash=sha256:d2c14d2cc7d54818897cc6f3cf73923c4e7dfe12f08f7bddda9dbea7fa82ea36
 cookies==2.2.1 \
     --hash=sha256:15bee753002dff684987b8df8c235288eb8d45f8191ae056254812dfd42c81d3 \
     --hash=sha256:d6b698788cae4cfa4e62ef8643a9ca332b79bd96cb314294b864ae8d7eb3ee8e