[devdocsgjs] Don't clean yum cache after dnf run

[Andy Holmes <andyholmes src gnome org>]

commit 327bf6d5aa453e3b70324cbaccac6a7fc6e827bf
Author: FeRD (Frank Dana) <ferdnyc gmail com>
Date:   Thu Apr 28 18:10:20 2022 -0400

    Don't clean yum cache after dnf run

 Dockerfile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/Dockerfile b/Dockerfile
index 29eb8a83..2f01f26c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@ RUN dnf install -y \
         telepathy-glib-devel tracker-devel udisks-devel upower-devel \
         vte{,291}-devel wireplumber-devel && \
     dnf clean all && \
-    rm -rf /var/cache/yum
+    rm -rf /var/cache/dnf
 
 
 # We build in fedora:33 for the ruby dependency
@@ -47,7 +47,7 @@ RUN dnf install -y 'dnf-command(builddep)' @development-tools bzip2 gcc-c++ && \
     dnf install -y ruby rubygem-bundler ruby-devel python3-markdown \
                    gobject-introspection-devel && \
     dnf clean all && \
-    rm -rf /var/cache/yum
+    rm -rf /var/cache/dnf
 
 # Install the devdocs application
 COPY . /opt/devdocs/