Don't attempt to build ARM IronBank Docker images

Author: mark-vieira

distribution/docker/build.gradle

@@ -339,6 +339,9 @@ void addBuildDockerImageTask(Architecture architecture, DockerBase base) {
 
 for (final Architecture architecture : Architecture.values()) {
   for (final DockerBase base : DockerBase.values()) {
+    // We don't build an ARM version of the Iron Bank image
+    if (architecture == Architecture.AARCH64 && base == DockerBase.IRON_BANK) return
+
     addBuildDockerContextTask(architecture, base)
     addTransformDockerContextTask(architecture, base)
     addBuildDockerImageTask(architecture, base)