Use Amazon Linux 2 provided runtime

The Go runtime will shortly be end of life, so change over to
the AL2 runtime.

lambda/Dockerfile

@@ -35,6 +35,6 @@ RUN go env
 COPY . /ws
 
 RUN mkdir -p /asset/ && \
-    make OUTPUT=/asset/main && \
-    file /asset/main && \
-    ls -lh /asset/main
+    make OUTPUT=/asset/bootstrap && \
+    file /asset/bootstrap && \
+    ls -lh /asset/bootstrap

lambda/Makefile

@@ -18,7 +18,7 @@ ifeq ($(GOOS), linux)
   endif
 endif
 
-BUILDTAGS := exclude_graphdriver_devicemapper exclude_graphdriver_btrfs containers_image_openpgp
+BUILDTAGS := exclude_graphdriver_devicemapper exclude_graphdriver_btrfs containers_image_openpgp lambda.norpc
 OUTPUT ?= cdk-ecr-deployment-handler
 
 all: test lambda

src/index.ts

@@ -140,8 +140,8 @@ export class ECRDeployment extends Construct {
     this.handler = new lambda.SingletonFunction(this, 'CustomResourceHandler', {
       uuid: this.renderSingletonUuid(memoryLimit),
       code: getCode(props.buildImage ?? 'public.ecr.aws/sam/build-go1.x:latest'),
-      runtime: lambda.Runtime.GO_1_X,
-      handler: 'main',
+      runtime: lambda.Runtime.PROVIDED_AL2,
+      handler: 'bootstrap',
       environment: props.environment,
       lambdaPurpose: 'Custom::CDKECRDeployment',
       timeout: Duration.minutes(15),