Add pipx

Dockerfile

@@ -83,10 +83,13 @@ RUN apt-get update \
  renderd \
  sudo \
  vim \
+ pipx \
 && apt-get clean autoclean \
 && apt-get autoremove --yes \
 && rm -rf /var/lib/{apt,dpkg,cache,log}/
 
+RUN pipx ensurepath
+
 RUN adduser --disabled-password --gecos "" renderer
 
 # Get Noto Emoji Regular font, despite it being deprecated by Google