accept the incoming JSON config data

.env.example

@@ -1,6 +1,3 @@
 # http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-set-up.html#cli-signup
 AWS_ACCESS_KEY_ID=<key>
 AWS_SECRET_ACCESS_KEY=<secret>
-
-# exclude the `s3://` prefix/protocol
-S3_BUCKET=<bucket name>

README.md

@@ -12,6 +12,9 @@ Requires Docker.
 
 ```bash
 cp .env.example .env
+
 # modify .env
-./script/run /full/path/to/dir/or/file
+
+# exclude the `s3://` prefix/protocol for the `bucket`
+./script/run </full/path/to/dir/or/file> <bucket>
 ```

assets/out

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+# http://concourse.ci/implementing-resources.html#out:-update-a-resource.
+
 # https://github.com/concourse/git-resource/blob/6fcfbd4/assets/out#L4-L16
 set -e
 
@@ -14,9 +16,15 @@ if [ -z "$source" ]; then
 fi
 #######################################
 
+# parse incoming config data
+payload=`cat`
+bucket=$(echo "$payload" | jq -r '.source.bucket')
+
+echo "Uploading to S3..."
 # credentials are provided via environment variables
 # http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#cli-environment
-aws s3 sync $source "s3://$S3_BUCKET"
+aws s3 sync $source "s3://$bucket"
+echo "...done."
 
 # use the current UNIX time as the version
 # https://github.com/concourse/git-resource/blob/6fcfbd4/assets/out#L133-L136

script/run

@@ -1,19 +1,22 @@
 #!/bin/sh
 
 set -e
-set -x
 
 source=$1
+bucket=$2
 
-if [ -z "$source" ]; then
-  echo "usage: $0 </full/path/to/dir/or/file>"
+if [ -z "$source" ] || [ -z "$bucket" ]; then
+  echo "usage: $0 </full/path/to/dir/or/file> <bucket>"
   exit 1
 fi
 
 docker build -t 18fgsa/s3-resource-simple .
 
-docker run \
+json="{\"source\": {\"bucket\": \"$bucket\"}}"
+
+echo $json | docker run \
   --env-file .env \
+  -i \
   --rm \
   -v $source:/tmp/input \
   18fgsa/s3-resource-simple \