Revert "Rewrites buildpack entrypoints to install Ruby before executing"

This reverts commit 5c0a32d.

Author: ryanmoran

bin/compile

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Cloud Foundry Java Buildpack
+# Copyright 2013-2020 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+$stdout.sync = true
+$stderr.sync = true
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
+
+require 'java_buildpack/buildpack'
+
+app_dir = ARGV[0]
+
+JavaBuildpack::Buildpack.with_buildpack(app_dir, nil, nil, 'Compile failed with exception %s', &:compile)

bin/compile

@@ -0,0 +1,35 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Cloud Foundry Java Buildpack
+# Copyright 2013-2020 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+$stdout.sync = true
+$stderr.sync = true
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
+
+require 'java_buildpack/buildpack'
+
+app_dir = ARGV[0]
+
+components = JavaBuildpack::Buildpack.with_buildpack(app_dir, nil, nil, 'Detect failed with exception %s',
+                                                     &:detect).compact
+
+if components.empty?
+  abort
+else
+  str = components.join(' ')
+  puts str.length > 255 ? str.slice(0..251) + '...' : str
+end

bin/detect

@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Cloud Foundry Java Buildpack
+# Copyright 2013-2020 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+$stdout.sync = true
+$stderr.sync = true
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
+
+require 'java_buildpack/buildpack'
+
+app_dir  = ARGV[0]
+deps_dir = ARGV[2]
+index    = ARGV[3]
+
+JavaBuildpack::Buildpack.with_buildpack(app_dir, deps_dir, index, 'Finalize failed with exception %s', &:compile)

bin/detect

@@ -0,0 +1,29 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# Cloud Foundry Java Buildpack
+# Copyright 2013-2020 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+$stdout.sync = true
+$stderr.sync = true
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
+
+require 'java_buildpack/buildpack'
+
+app_dir = ARGV[0]
+
+output = JavaBuildpack::Buildpack.with_buildpack(app_dir, nil, nil, 'Release failed with exception %s', &:release)
+
+puts output