Add docker config

.buildbot/openwrt/build.sh

@@ -111,6 +111,9 @@ mkdir -p files/etc/dropbear
 chmod 0750 files/etc/dropbear
 cp ${pwd}/authorized_keys files/etc/dropbear
 chmod 0400 files/etc/dropbear/authorized_keys
+mkdir -p files/etc/docker
+chmod 0750 files/etc/docker
+cp ${pwd}/daemon.json files/etc/docker
 mkdir -p files/etc/uci-defaults
 cp ${pwd}/defaults/* files/etc/uci-defaults
 

daemon.json

@@ -0,0 +1,6 @@
+{
+    "log-level": "warn",
+    "userland-proxy": false,
+    "iptables": true,
+    "storage-driver": "btrfs"
+}

defaults/48-docker

@@ -0,0 +1,14 @@
+VERSION=1
+
+[ "$(uci -q get defaults.version.docker)" -ge "$VERSION" ] && exit 0
+
+# save version
+/sbin/uci set defaults.version.docker="$VERSION"
+
+/sbin/uci -q batch << EOF
+set defaults.version.docker="$VERSION"
+commit defaults
+set docker.globals=globals
+set docker.globals.alt_config_file=/etc/docker/daemon.json
+commit docker
+EOF