Update Dockerfiles nextcloud & backup

infrastructure/backup/image/Dockerfile

@@ -1,4 +1,4 @@
-FROM domaindrivenarchitecture/dda-backup:1.0.7
+FROM domaindrivenarchitecture/dda-backup:1.0.9
 
 # Prepare Entrypoint Script
 ADD resources /tmp

infrastructure/nextcloud/test/Dockerfile

@@ -1,7 +1,7 @@
 FROM c4k-cloud
 
-RUN apt update
-RUN apt -yqq install --no-install-recommends --yes curl default-jre-headless
+RUN apt-get update
+RUN apt-get -yqq install --no-install-recommends --yes curl default-jre-headless
 
 RUN curl -L -o /tmp/serverspec.jar https://github.com/DomainDrivenArchitecture/dda-serverspec-crate/releases/download/2.0.0/dda-serverspec-standalone.jar