diff --git a/opt.d/build-raspbian-stretch.sh b/opt.d/build-raspbian-stretch.sh
index 7704253..a86a11f 100755
--- a/opt.d/build-raspbian-stretch.sh
+++ b/opt.d/build-raspbian-stretch.sh
@@ -16,14 +16,14 @@ zlib1g-dev
 "
 sudo aptitude install -y $shared_deps || exit 1
 
-# platform-independent openresty build
+# build openresty
 SetupOpenRestyVars || exit 1
 CustomiseVars || exit 1
 SetupForBuild || exit 1
 ConfigureOpenResty || exit 1
 BuildAndCleanup || exit 1
 
-# platform-independent tor build (see lib.sh)
+# build tor
 SetupTorVars || exit 1
 CustomiseVars || exit 1
 SetupForBuild || exit 1
diff --git a/opt.d/build-ubuntu-18.04.sh b/opt.d/build-ubuntu-18.04.sh
new file mode 100755
index 0000000..010c1c4
--- /dev/null
+++ b/opt.d/build-ubuntu-18.04.sh
@@ -0,0 +1,34 @@
+#!/bin/sh -x
+
+# platform-independent lib.sh
+opt_dir=`dirname $0`
+opt_dir=`pwd`
+. $opt_dir/lib.sh
+
+# platform dependencies
+shared_deps="
+dirmngr
+libevent-dev
+libpcre3-dev
+libssl-dev
+libssl1.1
+zlib1g-dev
+"
+sudo aptitude install -y $shared_deps || exit 1
+
+# build openresty
+SetupOpenRestyVars || exit 1
+CustomiseVars || exit 1
+SetupForBuild || exit 1
+ConfigureOpenResty || exit 1
+BuildAndCleanup || exit 1
+
+# build tor
+SetupTorVars || exit 1
+CustomiseVars || exit 1
+SetupForBuild || exit 1
+ConfigureTor || exit 1
+BuildAndCleanup || exit 1
+
+# done
+exit 0