in src/aspect.ts [84:90]
protected hasBeReplaced(prop: CfnTaskDefinition.ContainerDefinitionProperty): string | undefined {
if (typeof prop.image === 'object' && FN_SUB in prop.image &&
(prop.image[FN_SUB] as string).indexOf(this.account) > -1) {
return prop.image[FN_SUB];
} else if (prop.image && (prop.image as string) && prop.image.indexOf(this.account) > -1) { return prop.image; }
return undefined;
}