Release MacOS DMG file with compressed SecretlessBroker.app

[infamousjoeg]

Is your feature request related to a problem? Please describe.

It is not related to a problem.

Describe the solution you would like

Currently, every release includes a Go executable where GOOS_ARCH is set to darwin. This generates a single executable.

In addition to that, I am proposing that a MacOS compressed DMG file is also released that contains SecretlessBroker.app in agent-mode for easy install and use on MacOS.

See Additional context below for how this can be accomplished.

Describe alternatives you have considered

n/a

Additional context

╰ tree SecretlessBroker.app
SecretlessBroker.app
└── Contents
    ├── Info.plist
    ├── MacOS
    │   └── secretless-broker
    └── Resources
        └── icon.icns

3 directories, 3 files

1. mkdir SecretlessBroker.app
2. Within SecretlessBroker.app:

• touch Info.plist
• mkdir MacOS
• mkdir Resources

3. Within Info.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleExecutable</key>
	<string>secretless-broker</string>
	<key>CFBundleIconFile</key>
	<string>icon.icns</string>
	<key>CFBundleIdentifier</key>
	<string>com.cyberark.secretless</string>
	<key>NSHighResolutionCapable</key>
	<true/>
	<key>LSUIElement</key>
	<true/>
</dict>
</plist>

• CFBundleExecutable is the name of the executable under SecretlessBroker.app/MacOS.
• CFBundleIdentifier is the identifier of the .app when it is running.
• LSUIElement set to true sets "agent-mode" so when SecretlessBroker.app is running, it doesn't constantly bounce in the dock menu.

4. Within the MacOS directory, add the secretless_broker executable for Darwin from go build.
5. Within the Resources directory, add the icon set for SecretlessBroker.app icons in @1x and @2x sizes.

• See @infamousjoeg for this file.

To create the DMG file and compress it, follow the rest of the documentation on this blog post: https://medium.com/@mattholt/packaging-a-go-application-for-macos-f7084b00f6b5. At the end of the blog post, there is a script that automates this entire process.