diff --git a/opt.d/build-ubuntu-20.04.sh b/opt.d/build-ubuntu-20.04.sh
new file mode 100755
index 0000000..71b43cc
--- /dev/null
+++ b/opt.d/build-ubuntu-20.04.sh
@@ -0,0 +1,34 @@
+#!/bin/sh -x
+
+# platform-independent lib.sh
+cd `dirname $0` || exit 1
+opt_dir=`pwd`
+. lib.sh || exit 1
+
+# platform dependencies
+shared_deps="
+dirmngr
+libevent-dev
+libpcre3-dev
+libssl-dev
+libssl1.1
+zlib1g-dev
+"
+sudo apt 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