const fileSystem = new efs.CfnFileSystem(this, 'EFS', {
});
const mount = new efs.CfnMountTarget(this, 'MountTarget', {
fileSystemId: fileSystem.ref,
securityGroups: [vpc.vpcDefaultSecurityGroup],
subnetId: vpc.publicSubnets[0].subnetId,
});
new cdk.CfnOutput(this, 'FileSystemId', { value: mount.fileSystemId });