Guard publish task with option

Issue kriskbx#33

Author: Kenny Evitt

build.sh

@@ -1,10 +1,50 @@
 #!/bin/bash
 
+
+
+# Adapted from:
+#
+#  - [How can I handle command-line options and arguments in my script easily? - BashFAQ/035 - Greg's Wiki](http://mywiki.wooledge.org/BashFAQ/035)
+
+die() {
+    printf '%s\n' "$1" >&2
+    exit 1
+}
+
+# Initialize all the option variables.
+# This ensures we are not contaminated by variables from the environment.
+should_publish=false
+
+while :; do
+    case $1 in
+        --publish)
+            should_publish=true
+            ;;
+        --)                     # End of all options
+            shift
+            break
+            ;;
+        -?*)
+            message=$(printf 'ERROR: Unknown option: %s\n' "$1")
+            die "$message"
+            ;;
+        *)                      # Default case: No more options, so break out of the loop.
+            break
+    esac
+
+    shift
+done
+
+
+
 Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
 export DISPLAY=:99.0
 export DEBUG=electron-installer-snap:snapcraft
 sleep 5
 
 yarn install --force
 yarn run production
-yarn run publish
+
+if [[ "$should_publish" = true ]]; then
+    yarn run publish
+fi