Specify config.toml file suffix as docker build arg

Signed-off-by: Evan Lezar <elezar@nvidia.com>

config/config.toml.amazonlinux

@@ -0,0 +1,18 @@
+disable-require = false
+#swarm-resource = "DOCKER_RESOURCE_GPU"
+#accept-nvidia-visible-devices-envvar-when-unprivileged = true
+#accept-nvidia-visible-devices-as-volume-mounts = false
+
+[nvidia-container-cli]
+#root = "/run/nvidia/driver"
+#path = "/usr/bin/nvidia-container-cli"
+environment = []
+#debug = "/var/log/nvidia-container-toolkit.log"
+#ldcache = "/etc/ld.so.cache"
+load-kmods = true
+#no-cgroups = false
+#user = "root:video"
+ldconfig = "@/sbin/ldconfig"
+
+[nvidia-container-runtime]
+#debug = "/var/log/nvidia-container-runtime.log"