Update travis config

.travis.yml

@@ -1,16 +1,14 @@
-matrix:
+language: node_js
+node_js: "10"
+env:
+  - ELECTRON_CACHE=$HOME/.cache/electron ELECTRON_BUILDER_CACHE=$HOME/.cache/electron-builder
+
+jobs:
   include:
     - os: osx
-      osx_image: xcode9.4
-      language: node_js
-      node_js: "10"
-      env:
-        - ELECTRON_CACHE=$HOME/.cache/electron
-        - ELECTRON_BUILDER_CACHE=$HOME/.cache/electron-builder
-
+      osx_image: xcode11.3
     - os: linux
-      services: docker
-      language: generic
+      dist: xenial
 
 cache:
   yarn: false
@@ -21,19 +19,9 @@ cache:
 script:
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      docker run --rm \
-        $(env | \
-          grep -Eo '^[^\s=]*(DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_)[^\s=]*' | \
-          sed '/^$/d;s/^/-e /' | \
-          paste -sd ' ' \
-        ) \
-        -v ${PWD}:/project \
-        -v ~/.cache/electron:/root/.cache/electron \
-        -v ~/.cache/electron-builder:/root/.cache/electron-builder \
-        electronuserland/builder:10 \
-        /bin/bash -c "yarn && npm run release:linux"
+      yarn run release:linux
     else
-      npm run release:mac
+      yarn run release:mac
     fi
 before_cache:
   - rm -rf $HOME/.cache/electron-builder