build: Add CI for macOS

.travis.yml

@@ -1,14 +1,26 @@
-sudo: required
+language: csharp
 
-services:
-  - docker
-
-os:
-  - linux
+matrix:
+  include:
+    - os: linux
+      services:
+        - docker
+    - os: osx
+      sudo: required
 
 before_install:
-  - docker pull fedora:latest
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then docker pull ubuntu:xenial ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]];   then wget https://dl.xamarin.com/XamarinforMac/Mac/xamarin.mac-3.0.0.393.pkg ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]];   then sudo installer -pkg xamarin.mac*.pkg -target / ; fi
 
 script:
-  - docker build --file build/ci/Dockerfile --tag "sparkleshare:nightly" .
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then docker build --file build/ci/Dockerfile --tag sparkleshare:nightly . ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]];   then xbuild /p:Configuration=ReleaseMac SparkleShare.sln ; fi
+
+before_deploy:
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export DEPLOY_FILE=`docker run --name container sparkleshare:nightly find / -name sparkleshare*.tar.gz` ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then docker cp container:${DEPLOY_FILE} ./ ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then mv sparkleshare*.tar.gz sparkleshare-linux-nightly-${TRAVIS_COMMIT}.tar.gz ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]];   then mv SparkleShare/Mac/bin/ReleaseMac/SparkleShare.app . ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]];   then zip --recurse-paths sparkleshare-mac-nightly-${TRAVIS_COMMIT}.zip SparkleShare.app ; fi