use latest youtube-dl

Dockerfile

@@ -5,7 +5,7 @@ MAINTAINER Andrey Arapov <andrey.arapov@nixaid.com>
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update && \
-    apt-get -y install python3 virtualenv mpv paxctl && \
+    apt-get -y --no-install-recommends install python3 virtualenv mpv paxctl && \
     apt-get clean && \
     rm -rf -- /var/lib/apt/lists
 
@@ -25,7 +25,8 @@ WORKDIR /opt
 RUN virtualenv -p python3 venv && \
     . venv/bin/activate && \
     pip install --upgrade pip && \
-    pip install mps-youtube youtube-dl && \
+    pip install --upgrade https://github.com/rg3/youtube-dl/archive/master.zip && \
+    pip install mps-youtube && \
     deactivate
 
 # Make mps-youtube grsec friendly