feat(slugbuilder): update stack to heroku-18-build (#10)

Author: duanhongyi

rootfs/Dockerfile

@@ -1,5 +1,6 @@
-FROM heroku/cedar:14
+FROM heroku/heroku:18-build
 
+ENV DEBIAN_FRONTEND noninteractive
 RUN mkdir /app
 RUN addgroup --quiet --gid 2000 slug && \
     useradd slug --uid=2000 --gid=2000 --home-dir /app --no-create-home
@@ -12,8 +13,6 @@ RUN sed -i -e 's/^deb-src/#deb-src/' /etc/apt/sources.list && \
     apt-get autoremove -y && \
     apt-get clean -y && \
     # package up license files if any by appending to existing tar
-    COPYRIGHT_TAR='/usr/share/copyrights.tar'; \
-    gunzip $COPYRIGHT_TAR.gz; tar -rf $COPYRIGHT_TAR /usr/share/doc/*/copyright; gzip $COPYRIGHT_TAR && \
     rm -rf \
         /usr/share/doc \
         /usr/share/man \

rootfs/builder/build.sh

@@ -9,7 +9,6 @@ trap sleep_before_exit EXIT
 
 [[ $DEIS_DEBUG ]] && set -x
 unset DEIS_DEBUG
-
 app_dir=/app
 build_root=/tmp/build
 cache_root=/tmp/cache
@@ -97,13 +96,16 @@ export APP_DIR="$app_dir"
 export HOME="$app_dir"
 REQUEST_ID=$(openssl rand -base64 32)
 export REQUEST_ID
-export STACK=cedar-14
+export STACK=heroku-18
 
 ## copy the environment dir excluding the ephemeral ..data/ dir and other symlinks created by Kubernetes.
-
-if [ "$(ls -A $secret_dir)" ]; then
-   cp -r $secret_dir/. $env_root/
-fi
+secret_dir_file_list="$(ls -A $secret_dir)"
+for subpath in $secret_dir_file_list; do
+    full_path="$secret_dir/$subpath"
+    if [[ -f "$full_path" ]]; then
+        cp "$full_path" "$env_root/"
+    fi
+done
 
 ## SSH key configuration
 
@@ -152,7 +154,7 @@ if [[ -n "$BUILDPACK_URL" ]]; then
     fi
 
     selected_buildpack="$buildpack"
-    buildpack_name=$($buildpack/bin/detect "$build_root") && selected_buildpack=$buildpack
+    buildpack_name=$("$buildpack/bin/detect" "$build_root") && selected_buildpack=$buildpack
 else
     for buildpack in "${buildpacks[@]}"; do
         buildpack_name=$("$buildpack/bin/detect" "$build_root") && selected_buildpack=$buildpack && break
@@ -175,9 +177,7 @@ if [[ -f "$build_root/bin/pre-compile" ]]; then
 fi
 
 ## Buildpack compile
-
 "$selected_buildpack/bin/compile" "$build_root" "$cache_root" "$env_root" | ensure_indent
-
 "$selected_buildpack/bin/release" "$build_root" > $build_root/.release
 
 ## Run post-compile hook

rootfs/builder/install-buildpacks

@@ -29,14 +29,14 @@ download_buildpack() {
 mkdir -p $BUILDPACK_INSTALL_PATH
 
 download_buildpack https://github.com/heroku/heroku-buildpack-multi.git          v1.0.0   01-multi
-download_buildpack https://github.com/heroku/heroku-buildpack-clojure.git        v77      02-clojure
-download_buildpack https://github.com/heroku/heroku-buildpack-go.git             v71      03-go
-download_buildpack https://github.com/heroku/heroku-buildpack-gradle.git         v23      04-gradle
-download_buildpack https://github.com/heroku/heroku-buildpack-grails.git         v21      05-grails
-download_buildpack https://github.com/heroku/heroku-buildpack-java.git           v53      06-java
-download_buildpack https://github.com/heroku/heroku-buildpack-nodejs.git         v110     07-nodejs
-download_buildpack https://github.com/heroku/heroku-buildpack-php.git            v121     08-php
+download_buildpack https://github.com/heroku/heroku-buildpack-clojure.git        v82      02-clojure
+download_buildpack https://github.com/heroku/heroku-buildpack-go.git             v94      03-go
+download_buildpack https://github.com/heroku/heroku-buildpack-gradle.git         v27      04-gradle
+download_buildpack https://github.com/heroku/heroku-buildpack-grails.git         v21      05-grails 
+download_buildpack https://github.com/heroku/heroku-buildpack-java.git           v62      06-java
+download_buildpack https://github.com/heroku/heroku-buildpack-nodejs.git         v130     07-nodejs
+download_buildpack https://github.com/heroku/heroku-buildpack-php.git            v145     08-php   
 download_buildpack https://github.com/heroku/heroku-buildpack-play.git           v26      09-play
-download_buildpack https://github.com/heroku/heroku-buildpack-python.git         v109     10-python
-download_buildpack https://github.com/heroku/heroku-buildpack-ruby.git           v167     11-ruby
-download_buildpack https://github.com/heroku/heroku-buildpack-scala.git          v77      12-scala
+download_buildpack https://github.com/heroku/heroku-buildpack-python.git         v144     10-python
+download_buildpack https://github.com/heroku/heroku-buildpack-ruby.git           v195     11-ruby
+download_buildpack https://github.com/heroku/heroku-buildpack-scala.git          v82      12-scala