refactor: Use jq from docker

lib/functions.sh

@@ -345,3 +345,7 @@ generate_simple_password(){
   local combined_text="This is a salt string to generate one consistent password for ${seed_text}. It is not required to be secret."
   echo "${combined_text}" | openssl rsautl -sign -inkey "/etc/bridgehead/pki/${SITE_ID}.priv.pem" 2> /dev/null | base64 | head -c 26 | sed 's/[+\/]/A/g'
 }
+
+docker_jq() {
+    docker run --rm -i docker.verbis.dkfz.de/cache/jqlang/jq:1.7 "$@"
+}