diff --git a/builder/dockerfile.opensuse_15.build b/builder/dockerfile.opensuse_15.build
index d7b1e72..78e660e 100644
--- a/builder/dockerfile.opensuse_15.build
+++ b/builder/dockerfile.opensuse_15.build
@@ -49,9 +49,8 @@ RUN zypper install -ny \
   zlib-devel \
   libva-devel
 
-RUN useradd -u 1000 docker && \
-  groupadd -g 1000 docker && \
-  usermod -a -G docker docker
+RUN groupadd -g 1000 docker && \
+  useradd -u 1000 -g docker docker
 
 RUN ARCH=$(arch) && \
   CMAKE_URL="https://cmake.org/files/v3.22/cmake-3.22.0" && \
diff --git a/builder/dockerfile.opensuse_15.rpm.build b/builder/dockerfile.opensuse_15.rpm.build
index 591c54f..d121d41 100644
--- a/builder/dockerfile.opensuse_15.rpm.build
+++ b/builder/dockerfile.opensuse_15.rpm.build
@@ -20,8 +20,7 @@ COPY opensuse/kasmvncserver.spec /tmp
 
 RUN zypper -n install $(grep BuildRequires /tmp/*.spec | cut -d' ' -f2 | xargs)
 
-RUN useradd -u 1000 -m -d /home/docker docker && \
-  groupadd -g 1000 docker && \
-  usermod -a -G docker docker
+RUN groupadd -g 1000 docker && \
+  useradd -u 1000 -g docker docker
 
 USER docker