Move installable packages to pkg

Still leaves some intermediate repos in `base/`

See #1266

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

pkg/sysctl/etc/sysctl.d/00-moby.conf

@@ -0,0 +1,27 @@
+# from Alpine defaults
+net.ipv4.tcp_syncookies = 1
+net.ipv4.conf.default.rp_filter = 1
+net.ipv4.conf.all.rp_filter = 1
+net.ipv4.ping_group_range=999 59999
+# general limits
+vm.max_map_count = 262144
+vm.overcommit_memory = 1
+net.core.somaxconn = 1024
+net.ipv4.neigh.default.gc_thresh1 = 30000
+net.ipv4.neigh.default.gc_thresh2 = 32000
+net.ipv4.neigh.default.gc_thresh3 = 32768
+fs.aio-max-nr = 1048576
+fs.inotify.max_user_watches = 524288
+fs.file-max = 524288
+# for rngd
+kernel.random.write_wakeup_threshold = 3072
+# security restrictions
+kernel.kptr_restrict = 2
+net.ipv4.conf.all.send_redirects = 0
+net.ipv4.conf.default.accept_redirects = 0
+net.ipv4.conf.default.accept_source_route = 0
+net.ipv6.conf.all.accept_redirects = 0
+net.ipv6.conf.default.accept_redirects = 0
+kernel.perf_event_paranoid = 3
+fs.protected_hardlinks = 1
+fs.protected_symlinks = 1