Add no-install-recommends

Author: cicnavi

docker/Dockerfile

@@ -2,7 +2,7 @@ ARG SSP_VERSION="v2.4.4"
 FROM cirrusid/simplesamlphp:${SSP_VERSION}
 #FROM cicnavi/simplesamlphp:${SSP_VERSION}
 
-RUN apt-get update && apt-get install -y sqlite3
+RUN apt-get update && apt-get --no-install-recommends install -y sqlite3
 # Prepopulate the DB with items needed for testing
 ADD docker/conformance.sql /tmp/
 # Preload some clients