[damned-lies/oscp] Fix commands names

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 9be7a7cfb8b9ed95e32ae6bdb95c09df6918d778
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed Mar 25 23:22:03 2020 +0100

    Fix commands names

 virtualenv/Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/virtualenv/Dockerfile b/virtualenv/Dockerfile
index 4d18a166..52964d62 100644
--- a/virtualenv/Dockerfile
+++ b/virtualenv/Dockerfile
@@ -12,9 +12,9 @@ RUN mkdir -p /l10n && \
 ADD local_settings.py /l10n/damnedlies/damnedlies/local_settings.py
 
 WORKDIR /l10n/damnedlies
-RUN virtualenv /l10n/venv && \
+RUN virtualenv-3.6 /l10n/venv && \
     /l10n/venv/bin/pip install -r requirements.txt
-RUN python3 manage.py collectstatic --noinput
+RUN /l10n/venv/bin/python manage.py collectstatic --noinput
 
 RUN mkdir -p /l10n/.ssh
 RUN ln -s /l10n/.ssh_secret/ssh-privatekey /l10n/.ssh/ssh-privatekey