Klarlack: clean cache and install brotli

container/Dockerfile.klarlack

@@ -9,9 +9,11 @@ RUN apt-get install -y varnish-dev=6.3.2-1~bionic
 # add uplex repodownloag gpg and import
 RUN echo "deb https://pkg.uplex.de/dpkg bionic innovation" | tee -a /etc/apt/sources.list
 RUN curl -L https://pkg.uplex.de/dpkg/uplex-varnish.gpg.key | apt-key add -
+RUN apt-get clean
 RUN apt-get update
 
 RUN apt-get install -y dcs-classifier \
+    libvfp-brotli \
     libvmod-all-healthy \
     libvmod-blobdigest \
     libvmod-blobsynth \