chore(screenshotter): support Browserstack and test on Safari 13.1 (#2306)

* Support Browserstack in screenshotter

* Support Browserstack in CircleCI

* Test screenshots on Safari 13.1

* Don't run Safari screenshotter on forked PRs

* Update a screenshot

* Ignore *.log in .gitignore

dockers/screenshotter/screenshotter.sh

@@ -17,7 +17,7 @@ cleanup() {
 container=
 trap cleanup EXIT
 status=0
-for browserTag in firefox:2.48.2 chrome:2.48.2; do
+for browserTag in firefox:3.141.59-20200525 chrome:3.141.59-20200525; do
     browser=${browserTag%:*}
     image=selenium/standalone-${browserTag}
     echo "Starting container for ${image}"
@@ -34,4 +34,22 @@ for browserTag in firefox:2.48.2 chrome:2.48.2; do
     echo "${res} taking screenshots, stopping and removing ${container:0:12}"
     cleanup
 done
+
+if [[ $BROWSERSTACK_USER ]]; then
+    echo "Creating screenshots for Safari..."
+    if yarn node "$(dirname "$0")"/screenshotter.js \
+            --browser=safari --browserstack --selenium-capabilities '{
+                "browserName": "Safari",
+                "browser_version": "13.1",
+                "os": "OS X",
+                "os_version": "Catalina"
+            }' "$@"; then
+        res=Done
+    else
+        res=Failed
+        status=1
+    fi
+    echo "${res} taking screenshots"
+fi
+
 exit ${status}