Invoke post_compile hook before install and add pre/post_install hooks (

#68)

* Execute post_compile hook before install step

* add pre_install and post_install hooks

* Update README.md

README.md

@@ -114,11 +114,13 @@ $ git push heroku master
 
 ### Hooks
 
-You can place custom scripts to be run before and after compiling your Swift
+You can place custom scripts to be run before and after compiling and installing your Swift
 source code inside the following files in your repository:
 
 - `bin/pre_compile`
 - `bin/post_compile`
+- `bin/pre_install`
+- `bin/post_install`
 
 This is useful if you need to customize the final image.
 

bin/compile

@@ -53,14 +53,15 @@ cd $BUILD_DIR
 source "$BIN_DIR/steps/hooks/pre_compile" "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR"
 source "$BIN_DIR/steps/ssh"
 source "$BIN_DIR/steps/swift-build"
+source "$BIN_DIR/steps/hooks/post_compile" "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR"
 if [[ -z "$RUN_TESTS" ]]; then
+  source "$BIN_DIR/steps/hooks/pre_install" "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR"
   source "$BIN_DIR/steps/swift-install"
+  source "$BIN_DIR/steps/hooks/post_install" "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR"
 fi
 
 # Setup application environment
 mkdir -p $BUILD_DIR/.profile.d
 
 set-env PATH '$HOME/.swift-bin:$PATH'
 set-env LD_LIBRARY_PATH '$LD_LIBRARY_PATH:$HOME/.swift-lib'
-
-source "$BIN_DIR/steps/hooks/post_compile" "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR"

bin/steps/hooks/post_install

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+if [ -f bin/post_install ]; then
+  echo "-----> Running post-install hook"
+  chmod +x bin/post_install
+  ./bin/post_install
+fi

bin/steps/hooks/pre_install

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+if [ -f bin/pre_install ]; then
+  echo "-----> Running pre-install hook"
+  source ./bin/pre_install
+fi