feat: add Base category to metadata

Author: ahze

15/Containerfile

@@ -14,6 +14,7 @@ LABEL org.opencontainers.image.title="base" \
     org.opencontainers.image.vendor="daemonless" \
     org.opencontainers.image.authors="daemonless" \
     io.daemonless.type="base" \
+    io.daemonless.category="Base" \
     io.daemonless.packages="${PACKAGES}"
 
 ENV ASSUME_ALWAYS_YES=yes