Added funko export functionality

.gitignore

@@ -4,3 +4,4 @@
 /.shards/
 *.dwarf
 tmp/
+export/

src/faaso.cr

@@ -105,6 +105,31 @@ module Faaso
       end
     end
 
+    class Export
+      @arguments : Array(String) = [] of String
+      @options : Commander::Options
+
+      def initialize(options, arguments)
+        @options = options
+        @arguments = arguments
+      end
+
+      def run
+        funkos = Funko.from_paths(@arguments)
+        funkos.each do |funko|
+          # Create temporary build location
+          dst_path = Path.new("export", funko.name)
+          if File.exists? dst_path
+            puts "Error: #{dst_path} already exists, not exporting #{funko.path}"
+            next
+          end
+          puts "Exporting #{funko.path} to #{dst_path}"
+          Dir.mkdir_p(dst_path)
+          funko.prepare_build dst_path
+        end
+      end
+    end
+
     class Down
       @arguments : Array(String) = [] of String
       @options : Commander::Options

src/funko.cr

@@ -12,10 +12,10 @@ class Funko
   # if Nil, it has no template whatsoever
   property runtime : (String | Nil)? = nil
 
-  # Extra packages shipped with the Docker image
+  # Extra operating system packages shipped with the runtime's Docker image
   property ship_packages : Array(String) = [] of String
 
-  # Extra packages used only in the *build* image
+  # Extra operating system packages used only when *building* the funko
   property devel_packages : Array(String) = [] of String
 
   # Where this is located in the filesystem

src/main.cr

@@ -34,12 +34,21 @@ cli = Commander::Command.new do |cmd|
 
   cmd.commands.add do |command|
     command.use = "down"
-    command.short = "Stop a function"
-    command.long = "Stop a function in a container"
+    command.short = "Stop a funko"
+    command.long = "Stop a funko in a container"
     command.run do |options, arguments|
       Faaso::Commands::Down.new(options, arguments).run
     end
   end
+
+  cmd.commands.add do |command|
+    command.use = "export"
+    command.short = "Export a funko to a directory"
+    command.long = "Exports a funko as a self-contained directory."
+    command.run do |options, arguments|
+      Faaso::Commands::Export.new(options, arguments).run
+    end
+  end
 end
 
 Commander.run(cli, ARGV)