Fix Dockerfile

kubernetes-tools/Dockerfile

@@ -4,13 +4,10 @@ LABEL maintainer="Teckids e.V. <verein@teckids.org>"
 ENV LANG=C.UTF-8
 ENV DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update && \
-    apt-get install -y wget && \
-    wget https://dl.k8s.io/release/v1.28.1/bin/linux/amd64/kubectl &&\
-    chmod +x ./kubectl && \
-    mv ./kubectl /usr/local/bin/kubectl && \
-    wget https://get.helm.sh/helm-v3.12.3-linux-amd64.tar.gz && \
-    wget https://get.helm.sh/helm-v3.12.3-linux-amd64.tar.gz.sha256sum && \
-    sha256sum helm-v3.12.3-linux-amd64.tar.gz && \
-    tar -zxvf helm-v3.12.3-linux-amd64.tar.gz && \
-    mv linux-amd64/helm /usr/local/bin/helm 
+RUN apt-get update && apt-get install -y wget
+RUN wget https://dl.k8s.io/release/v1.28.1/bin/linux/amd64/kubectl
+RUN chmod +x ./kubectl 
+RUN mv ./kubectl /usr/local/bin/kubectl 
+RUN wget https://get.helm.sh/helm-v3.12.3-linux-amd64.tar.gz 
+RUN tar -zxvf helm-v3.12.3-linux-amd64.tar.gz 
+RUN mv linux-amd64/helm /usr/local/bin/helm