diff --git a/ci/Dockerfile b/ci/Dockerfile
index 4df6eb9..bff7b36 100755
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -7,21 +7,20 @@ ARG USER_UID="1001"
 ARG USER_GID="1001"
 ARG USER_NAME="jenkins"
 
-
 RUN groupadd -g $USER_GID $USER_NAME && \
 	useradd -m -g $USER_GID -u $USER_UID $USER_NAME
 
 RUN set -eux; \
-    touch /etc/apt/apt.conf.d/99verify-peer.conf &&  \
-    echo >>/etc/apt/apt.conf.d/99verify-peer.conf "Acquire { https::Verify-Peer false }" && \
+	touch /etc/apt/apt.conf.d/99verify-peer.conf &&  \
+	echo >>/etc/apt/apt.conf.d/99verify-peer.conf "Acquire { https::Verify-Peer false }" && \
 	sed -i -e 's/archive.ubuntu.com/atl.mirrors.clouvider.net\/ubuntu/g' /etc/apt/sources.list && \
 	sed -i -e 's/security.ubuntu.com/atl.mirrors.clouvider.net\/ubuntu/g' /etc/apt/sources.list && \
 	sed -i -e 's/ports.ubuntu.com/ftp.tu-chemnitz.de\/pub\/linux/g' /etc/apt/sources.list && \
 	sed -i -e 's/http/https/g' /etc/apt/sources.list && \
 	apt-get update &&  \
-    apt-get -y install curl zip gnupg gnupg1 libfreetype6 fontconfig wget git && \
-    rm -rf /var/lib/apt/lists/* &&  \
-    rm -rf /tmp/*
+	apt-get -y install curl zip gnupg gnupg1 libfreetype6 fontconfig wget git && \
+	rm -rf /var/lib/apt/lists/* &&  \
+	rm -rf /tmp/*
 
 USER $USER_UID:$USER_GID
 
@@ -31,9 +30,9 @@ COPY java-tools.properties /temp/java-tools.properties
 RUN curl -s "https://get.sdkman.io" | bash
 
 RUN bash -c "cd /temp && \
-    ./java-init.sh && \
-    rm -rf $HOME/.sdkman/archives/* && \
-    rm -rf $HOME/.sdkman/tmp/*"
+	./java-init.sh && \
+	rm -rf $HOME/.sdkman/archives/* && \
+	rm -rf $HOME/.sdkman/tmp/*"
 
 ENV MAVEN_HOME="$HOME/.sdkman/candidates/maven/current"
 ENV JAVA_HOME="$HOME/.sdkman/candidates/java/current"