diff --git a/Dockerfile b/Dockerfile
index b2d9491..494b1c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,11 +7,10 @@ LABEL AlternativeImageName="wollud1969/build-env-java"
 
 
 RUN \
-  wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | apt-key add -
-  add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/
-
+  wget -qO - https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public | apt-key add - && \
+  add-apt-repository --yes https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ && \
   apt update && \
-  apt install adoptopenjdk-8-hotspot
+  apt install adoptopenjdk-8-hotspot && \
   apt install -y maven && \
   rm -rf /var/lib/apt/lists/*