Add OCI pkg labels

Author: User Ahze

15/Containerfile

@@ -1,17 +1,19 @@
 ARG FREEBSD_RELEASE=15.0
 FROM ghcr.io/freebsd/freebsd-runtime:${FREEBSD_RELEASE}
 
-LABEL org.opencontainers.image.title="base" \
-      org.opencontainers.image.description="FreeBSD base image with s6 supervision" \
-      org.opencontainers.image.source="https://github.com/daemonless/base" \
-      org.opencontainers.image.url="https://github.com/daemonless/base" \
-      org.opencontainers.image.licenses="BSD-2-Clause" \
-      org.opencontainers.image.vendor="daemonless" \
-      org.opencontainers.image.authors="daemonless"
-
 ARG FREEBSD_MAJOR=15
 ARG FREEBSD_ARCH=amd64
 ARG PKG_BRANCH=latest
+ARG PACKAGES="s6 s6-rc execline FreeBSD-utilities"
+
+LABEL org.opencontainers.image.title="base" \
+    org.opencontainers.image.description="FreeBSD base image with s6 supervision" \
+    org.opencontainers.image.source="https://github.com/daemonless/base" \
+    org.opencontainers.image.url="https://github.com/daemonless/base" \
+    org.opencontainers.image.licenses="BSD-2-Clause" \
+    org.opencontainers.image.vendor="daemonless" \
+    org.opencontainers.image.authors="daemonless" \
+    io.daemonless.packages="${PACKAGES}"
 
 ENV ASSUME_ALWAYS_YES=yes
 ENV PUID=1000
@@ -26,7 +28,7 @@ COPY root/ /
 # Fix /usr/local/sbin permissions (pkg creates it as 700)
 RUN rm -rf /usr/local/etc/pkg/repos && \
     pkg update && \
-    pkg install -y s6 s6-rc execline FreeBSD-utilities && \
+    pkg install -y ${PACKAGES} && \
     chmod 755 /usr/local/sbin && \
     pkg clean -ay && \
     rm -rf /var/cache/pkg/* /var/db/pkg/repos/*
@@ -37,10 +39,10 @@ RUN pw groupadd -n bsd -g 1000 && \
 
 # Create directory structure for init scripts
 RUN mkdir -p /etc/cont-init.d \
-             /etc/services.d \
-             /custom-cont-init.d \
-             /custom-services.d \
-             /run/s6/services
+    /etc/services.d \
+    /custom-cont-init.d \
+    /custom-services.d \
+    /run/s6/services
 
 # Make scripts executable
 RUN chmod +x /init /etc/cont-init.d/* 2>/dev/null || true