+# settings for distro: trusty/ubuntu-minimal, 7/centos7
+export DIB_OS_RELEASE=${DIB_OS_RELEASE:-trusty}
+export DIB_OS_ELEMENT=${DIB_OS_ELEMENT:-ubuntu-minimal}
+
+# for centos 7: "openssh-server,vim,less,bridge-utils,iputils,rsyslog,curl"
+export DIB_OS_PACKAGES=${DIB_OS_PACKAGES:-"openssh-server,vlan,vim,less,bridge-utils,language-pack-en,iputils-ping,rsyslog,curl"}
+
+# Additional dib elements
+export EXTRA_DIB_ELEMENTS=${EXTRA_DIB_ELEMENTS:-}
+