feat: Enabling multi-arch (#738)

Author: pacostas

.gitignore

@@ -1,4 +1,8 @@
+.DS_Store
+.idea
 /.bin
-/.build
-/bin
 /build
+/bin
+/linux
+/darwin
+/windows

buildpack.toml

@@ -10,8 +10,25 @@ api = "0.7"
     uri = "https://github.com/paketo-buildpacks/yarn-start/blob/main/LICENSE"
 
 [metadata]
-  include-files = ["bin/run", "bin/build", "bin/detect", "buildpack.toml"]
-  pre-package = "./scripts/build.sh"
+  include-files = [
+    "buildpack.toml",
+    "linux/amd64/bin/build",
+    "linux/amd64/bin/detect",
+    "linux/amd64/bin/run",
+    "linux/arm64/bin/build",
+    "linux/arm64/bin/detect",
+    "linux/arm64/bin/run",
+  ]
+
+  pre-package = "./scripts/build.sh --target linux/amd64 --target linux/arm64"
 
 [[stacks]]
   id = "*"
+
+[[targets]]
+  os = "linux"
+  arch = "amd64"
+
+[[targets]]
+  os = "linux"
+  arch = "arm64"