Fixed travis build script.

.travis.yml

@@ -21,21 +21,11 @@ cache:
   - $HOME/.cache/electron
   - $HOME/.cache/electron-builder
 
-before_install:
-  - |
-    if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-      mkdir -p /tmp/git-lfs && curl -L https://github.com/github/git-lfs/releases/download/v2.3.1/git-lfs-$([ "$TRAVIS_OS_NAME" == "linux" ] && echo "linux" || echo "darwin")-amd64-2.3.1.tar.gz | tar -xz -C /tmp/git-lfs --strip-components 1
-      export PATH="/tmp/git-lfs:$PATH"
-    fi
-
-before_script:
-  - git lfs pull
-
 script:
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      docker run --rm \
-        --env-file <(env | grep -iE 'DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_') \
+      ENVS=`env | grep -iE '(DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_)' | sed -n '/^[^\t]/s/=.*//p' | sed '/^$/d' | sed 's/^/-e /g' | tr '\n' ' '`
+      docker run $ENVS --rm \
         -v ${PWD}:/project \
         -v ~/.cache/electron:/root/.cache/electron \
         -v ~/.cache/electron-builder:/root/.cache/electron-builder \