[jenkins-with-docker] Use the new official Docker guide for Debian

Author: FloopCZ

dockerfiles/jenkins-with-docker

@@ -21,11 +21,14 @@ RUN apt-get install -y \
       sudo \
     && apt-get clean -y
 
-RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
-RUN add-apt-repository \
-      "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu \
-      $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") \
-      stable"
+RUN install -m 0755 -d /etc/apt/keyrings
+ && curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+ && chmod a+r /etc/apt/keyrings/docker.asc
+
+RUN echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 
 RUN apt-get update \
     && apt-get install -y docker-ce \