Dockerfile: Improve cleanup step

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Author: patrickelectric

Dockerfile

@@ -139,6 +139,10 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
             libx264-164 \
             libx265-199 \
             libxml2 \
+    # Remove bloat packages not needed for headless BlueOS
+    && apt-get purge -y --auto-remove adwaita-icon-theme libflite1 librsvg2-2 \
+    && rm -rf /usr/share/icons /usr/share/themes \
+    # Clean up apt
     && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
     && ln -sf /usr/bin/vim.tiny /usr/bin/vim