Build Ubuntu 16.04 (Xenial) package in Travis
diff --git a/.travis/xenial/Dockerfile b/.travis/xenial/Dockerfile
new file mode 100644
index 0000000..ad5414f
--- /dev/null
+++ b/.travis/xenial/Dockerfile
@@ -0,0 +1,11 @@
+FROM ubuntu:xenial
+
+RUN apt-get update
+RUN apt-get -y install packaging-dev equivs
+
+RUN useradd -s /bin/bash -m deb
+RUN echo >> /etc/sudoers
+RUN echo "deb ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+
+USER deb
+WORKDIR /home/deb
diff --git a/.travis/xenial/build.sh b/.travis/xenial/build.sh
new file mode 100755
index 0000000..5c140f9
--- /dev/null
+++ b/.travis/xenial/build.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -e
+set -x
+
+## Basic variables
+
+CURDIR=$(dirname $(readlink -f $0))
+TOPDIR=$(git rev-parse --show-toplevel 2>/dev/null)
+
+DEBDIR=${TOPDIR}/contrib/packages/deb/ubuntu-xenial
+
+VERSION=$(grep '^set(VERSION ' ${TOPDIR}/CMakeLists.txt | sed 's@^set(VERSION \(.*\))@\1@')
+
+## Prepare the build directory
+
+rm -rf ${CURDIR}/build
+mkdir -p ${CURDIR}/build
+chmod a+w ${CURDIR}/build
+[ -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled && chcon -Rt container_file_t ${CURDIR}/build
+
+## Copy over the source code
+
+(cd ${TOPDIR} && git archive --prefix tigervnc-${VERSION}/ HEAD) | xz > ${CURDIR}/build/tigervnc_${VERSION}.orig.tar.xz
+
+## Copy over the packaging files
+
+cp -r ${DEBDIR}/debian ${CURDIR}/build/debian
+
+chmod a+x ${CURDIR}/build/debian/rules
+
+# Assemble a fake changelog entry to get the correct version
+
+cat - > ${CURDIR}/build/debian/changelog << EOT
+tigervnc (${VERSION}-1ubuntu1) UNRELEASED; urgency=low
+
+ * Automated build for TigerVNC
+
+ -- Build bot <tigervncbot@tigervnc.org> $(date -R)
+
+EOT
+cat ${DEBDIR}/debian/changelog >> ${CURDIR}/build/debian/changelog
+
+## Start the build
+
+docker run --volume ${CURDIR}/build:/home/deb/build --interactive --tty --rm tigervnc/${DOCKER} \
+ bash -c "
+ tar -C ~/build -axf ~/build/tigervnc_${VERSION}.orig.tar.xz &&
+ cp -a ~/build/debian ~/build/tigervnc-${VERSION}/debian &&
+ mk-build-deps ~/build/tigervnc-${VERSION}/debian/control &&
+ sudo dpkg --unpack ~/tigervnc-build-deps_*.deb &&
+ sudo apt-get -f install -y &&
+ cd ~/build/tigervnc-${VERSION} && dpkg-buildpackage
+ "