[IMP] Dockerfile: install lessc from jessie's packages

8.0/Dockerfile

@@ -7,13 +7,11 @@ RUN set -x; \
         && apt-get install -y --no-install-recommends \
             ca-certificates \
             curl \
-            nodejs \
-            npm \
-            python-support \
+            node-less \
+            node-clean-css \
             python-pyinotify \
             python-renderpm \
-        && npm install -g less less-plugin-clean-css \
-        && ln -s /usr/bin/nodejs /usr/bin/node \
+            python-support \
         && curl -o wkhtmltox.deb -SL http://nightly.odoo.com/extra/wkhtmltox-0.12.1.2_linux-jessie-amd64.deb \
         && echo '40e8b906de658a2221b15e4e8cd82565a47d7ee8 wkhtmltox.deb' | sha1sum -c - \
         && dpkg --force-depends -i wkhtmltox.deb \