Update Dockerfile

Signed-off-by: Zoey <zoey@z0ey.de>

Dockerfile

@@ -22,7 +22,7 @@ RUN wget https://apk.corretto.aws/amazoncorretto.rsa.pub -O /etc/apk/keys/amazon
     mv /usr/local/bin/apache-maven-"$MAVEN_VERSION" /usr/local/bin/mvn && \
     wget https://dlcdn.apache.org/maven/maven-4/"$MAVEN4_VERSION"/binaries/apache-maven-"$MAVEN4_VERSION"-bin.tar.gz -O - | tar xz -C /usr/local/bin && \
     mv /usr/local/bin/apache-maven-"$MAVEN4_VERSION" /usr/local/bin/mvn4 && \
-    adduser -h /tmp -s /bin/ash -DHu 1000 -k /dev/null jenkins
+    adduser -h /tmp -s /bin/ash -DHu 1000 -k /dev/null jenkins && \
     apk del --no-cache shadow
 
 COPY --from=docker:26.0.0-cli-alpine3.19 /usr/local/bin/docker /usr/local/bin/docker