Move target buildpack to a tmp dir before executing

heroku · Feb 24, 2020 · eece775 · eece775
1 parent ad7c242
commit eece775
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/Makefile b/Makefile
@@ -10,7 +10,7 @@ SHELL=/bin/bash -o pipefail
 
 GO111MODULE := on
 
-VERSION := "v0.0.5"
+VERSION := "v0.1"
 
 build:
 	@GOOS=linux go build -o "bin/release" ./cmd/release/...

diff --git a/bin/build b/bin/build
@@ -6,10 +6,16 @@ set -o pipefail
 set -eu
 
 bp_dir=$(cd $(dirname $0)/..; pwd) # absolute path
-target_dir="${bp_dir}/target"
+source_dir="${bp_dir}/target"
+
 layers_dir="${1:?}"
 platform_dir="${2:?}"
 
+# copy the buildpack source into the target dir
+target_dir="$(mktemp -d)/target"
+cp -R "$source_dir" "$target_dir"
+chmod -R +w "$target_dir"
+
 # create a shim cache layer
 cache_dir="${layers_dir}/shim"
 mkdir -p "${cache_dir}"