feat: added acl to config

Allows changing of the object ACL using either an environment variable or config option

README.md

@@ -28,6 +28,7 @@ cp -r ./node_modules/ghost-storage-adapter-s3 ./content/adapters/storage/s3
     "endpoint": "YOUR_OPTIONAL_ENDPOINT_URL (only needed for 3rd party S3 providers)",
     "serverSideEncryption": "YOUR_OPTIONAL_SSE (See note 2 below)",
     "forcePathStyle": true,
+    "acl": "YOUR_OPTIONAL_ACL (See note 4 below)",
   }
 }
 ```
@@ -37,6 +38,8 @@ Note 2: if your s3 bucket enforces SSE use serverSideEncryption with the [approp
 
 Note 3: if your s3 providers requires path style you can enable it with `forcePathStyle`
 
+Note 4: if you use CloudFront the object ACL does not need to be set to "public-read"
+
 ### Via environment variables
 
 ```
@@ -49,6 +52,7 @@ GHOST_STORAGE_ADAPTER_S3_PATH_PREFIX // optional
 GHOST_STORAGE_ADAPTER_S3_ENDPOINT // optional
 GHOST_STORAGE_ADAPTER_S3_SSE // optional
 GHOST_STORAGE_ADAPTER_S3_FORCE_PATH_STYLE // optional
+GHOST_STORAGE_ADAPTER_S3_ACL // optional
 ```
 
 ## AWS Configuration

src/index.js

@@ -20,7 +20,8 @@ class Store extends BaseStore {
       secretAccessKey,
       endpoint,
       serverSideEncryption,
-      forcePathStyle
+      forcePathStyle,
+      acl
     } = config
 
     // Compatible with the aws-sdk's default environment variables
@@ -36,6 +37,7 @@ class Store extends BaseStore {
     this.endpoint = process.env.GHOST_STORAGE_ADAPTER_S3_ENDPOINT || endpoint || ''
     this.serverSideEncryption = process.env.GHOST_STORAGE_ADAPTER_S3_SSE || serverSideEncryption || ''
     this.s3ForcePathStyle = Boolean(process.env.GHOST_STORAGE_ADAPTER_S3_FORCE_PATH_STYLE) || Boolean(forcePathStyle) || false
+    this.acl = process.env.GHOST_STORAGE_ADAPTER_S3_ACL || acl || 'public-read'
   }
 
   delete (fileName, targetDir) {
@@ -87,7 +89,7 @@ class Store extends BaseStore {
         readFileAsync(image.path)
       ]).then(([ fileName, file ]) => {
         let config = {
-          ACL: 'public-read',
+          ACL: this.acl,
           Body: file,
           Bucket: this.bucket,
           CacheControl: `max-age=${30 * 24 * 60 * 60}`,