Build multi arch binaries and add targets

.gitignore

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 bin/
+linux/
 dependencies/
 package/
 scratch/

buildpack.toml

@@ -27,6 +27,15 @@ api = "0.7"
     type = "Apache-2.0"
     uri = "https://github.com/paketo-buildpacks/procfile/blob/main/LICENSE"
 
+
+[[targets]]
+os = "linux"
+arch = "amd64"
+
+[[targets]]
+os = "linux"
+arch = "arm64"
+
 [metadata]
   include-files = ["LICENSE", "NOTICE", "README.md", "bin/build", "bin/detect", "bin/main", "bin/build.exe", "bin/detect.exe", "bin/main.exe", "buildpack.toml"]
   pre-package = "scripts/build.sh"

scripts/build.sh

@@ -2,18 +2,18 @@
 
 set -euo pipefail
 
-GOOS="linux" go build -ldflags='-s -w' -o bin/main github.com/paketo-buildpacks/procfile/v5/cmd/main
-GOOS="windows" GOARCH="amd64" go build -ldflags='-s -w' -o bin/main.exe github.com/paketo-buildpacks/procfile/v5/cmd/main
+GOOS="linux" go build -ldflags='-s -w' -o linux/amd64/bin/main github.com/paketo-buildpacks/procfile/v5/cmd/main
+GOOS="linux" GOARCH="arm64" go build -ldflags='-s -w' -o linux/arm64/bin/main github.com/paketo-buildpacks/procfile/v5/cmd/main
 
 if [ "${STRIP:-false}" != "false" ]; then
-  strip bin/main bin/main.exe
+  strip linux/amd64/bin/main linux/arm64/bin/main
 fi
 
 if [ "${COMPRESS:-none}" != "none" ]; then
-  $COMPRESS bin/main bin/main.exe
+  $COMPRESS linux/amd64/bin/main linux/arm64/bin/main
 fi
 
-ln -fs main bin/build
-ln -fs main bin/detect
-ln -fs main.exe bin/build.exe
-ln -fs main.exe bin/detect.exe
+ln -fs main linux/amd64/bin/build
+ln -fs main linux/arm64/bin/build
+ln -fs main linux/amd64/bin/detect
+ln -fs main linux/arm64/bin/detect