make it work without docker-compose

Signed-off-by: Elliot Murphy <[email protected]>

README.md

@@ -1,6 +1,9 @@
 # lambda-clamav-layer
 an AWS Lambda Layer with clamav binaries
 
+
+## building a fresh layer
+
 To generate the layer, run
 
     docker-compose run layer
@@ -13,6 +16,33 @@ To inspect the contents of the zipfile, run
 
     unzip -vl build/lambda_layer.zip
 
-To publish the lambda layer, run:
+## Publishing the layer to your AWS environment
+
+For convenience, a prebuilt zip is published as a github release for this
+project, you can download it from the releases page.
+
+To publish the lambda layer, first upload it to S3 using a command like this:
+
+
+
+
+Then create a layer version, specifying the zip file:
+
+    aws lambda publish-layer-version --layer-name clamav-antivirus \
+
+To grant permissions to all accounts inside your organization to use the layer,
+use these commands.
+
+First, find your organization ID:
+
+    aws organizations describe-organization
+
+Next, add a permission grant for this organization:
 
-    TODO
+    aws lambda add-layer-version-permission \
+        --layer-name clamav-antivirus \
+        --version-number 1 \
+        --statement-id allOrganizationAccounts \
+        --principal * \
+        --action lambda:GetLayerVersion \
+        -- organization-id o-NNN

build/build.sh

@@ -4,6 +4,10 @@ set -e
 
 echo "prepping clamav"
 
+rm -rf bin
+rm -rf lib
+rm lambda_layer.zip
+
 yum update -y
 amazon-linux-extras install epel -y
 yum install -y cpio yum-utils zip

dockerbuild.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+set -e
+docker pull amazonlinux:2
+docker run --rm -ti -v `pwd`/build:/opt/app amazonlinux:2 /bin/bash -c "cd /opt/app && ./build.sh"