[gnome-runtime-images] base image: add ccache to the installed deps

[Jordan Petridis <jpetridis src gnome org>]

commit 7b5dd5e8a36d1963f0be4402f2c922bebf90332e
Author: Jordan Petridis <jpetridis gnome org>
Date:   Mon Apr 26 19:16:50 2021 +0000

    base image: add ccache to the installed deps

 base | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/base b/base
index ff5fa8f..9df219b 100644
--- a/base
+++ b/base
@@ -18,7 +18,7 @@ RUN useradd --home-dir /build --create-home --shell /bin/bash build
 WORKDIR /build
 
 RUN dnf upgrade -y --best --allowerasing && \
-    dnf install -y flatpak flatpak-builder librsvg2 ostree fuse elfutils \
+    dnf install -y flatpak flatpak-builder librsvg2 ostree fuse elfutils ccache \
     dconf dbus-daemon dbus-tools git bzr xorg-x11-server-Xvfb dbus-x11 python3-ruamel-yaml \
     python3-gobject json-glib jq && \
     dnf clean all