Copied Spaces support from packer .rake (#20573)

lib/tasks/mastodon.rake

@@ -142,7 +142,40 @@ namespace :mastodon do
       prompt.say "\n"
 
       if prompt.yes?('Do you want to store uploaded files on the cloud?', default: false)
-        case prompt.select('Provider', ['Amazon S3', 'Wasabi', 'Minio', 'Google Cloud Storage'])
+        case prompt.select('Provider', ['DigitalOcean Spaces', 'Amazon S3', 'Wasabi', 'Minio', 'Google Cloud Storage'])
+        when 'DigitalOcean Spaces'
+          env['S3_ENABLED'] = 'true'
+          env['S3_PROTOCOL'] = 'https'
+
+          env['S3_BUCKET'] = prompt.ask('Space name:') do |q|
+            q.required true
+            q.default "files.#{env['LOCAL_DOMAIN']}"
+            q.modify :strip
+          end
+
+          env['S3_REGION'] = prompt.ask('Space region:') do |q|
+            q.required true
+            q.default 'nyc3'
+            q.modify :strip
+          end
+
+          env['S3_HOSTNAME'] = prompt.ask('Space endpoint:') do |q|
+            q.required true
+            q.default 'nyc3.digitaloceanspaces.com'
+            q.modify :strip
+          end
+
+          env['S3_ENDPOINT'] = "https://#{env['S3_HOSTNAME']}"
+
+          env['AWS_ACCESS_KEY_ID'] = prompt.ask('Space access key:') do |q|
+            q.required true
+            q.modify :strip
+          end
+
+          env['AWS_SECRET_ACCESS_KEY'] = prompt.ask('Space secret key:') do |q|
+            q.required true
+            q.modify :strip
+          end
         when 'Amazon S3'
           env['S3_ENABLED']  = 'true'
           env['S3_PROTOCOL'] = 'https'