env/dragonfly-amd64: fix 6.4.0 build

  Due to several factors as an old pkg version in the ISO, or the
  amount of changes that have gone to the binary packages since
  6.4.0 was released, a bit of a workaround is needed in phase2.sh

env/dragonfly-amd64/phase2.sh

@@ -22,7 +22,17 @@ q' | ed /etc/rc.d/pfi
 # pfi startup does not have full path that a root login does.
 export PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/pkg/sbin:/usr/pkg/bin:/root/bin
 
+# Upgrade pkg first
+pkg update
+pkg upgrade -y pkg || true
+
+# pkg 1.14 had a bug
+[ ! -f /usr/local/etc/pkg/repos/df-latest.conf ] && \
+    cp /usr/local/etc/pkg/repos/df-latest.conf.sample /usr/local/etc/pkg/repos/df-latest.conf
+
 # Update pkg database and install extras we need.
+pkg update
+pkg upgrade -fy
 pkg install -y bash curl git gdb
 
 echo 'DONE WITH PHASE 2.'