diff --git a/import-stx b/import-stx
index 283ab387..3144b2dd 100644
--- a/import-stx
+++ b/import-stx
@@ -53,6 +53,11 @@
 #     SSL certificate validation. Only affects docker running in builder pods.
 #     Requires pod restart when changed.
 #
+#   STX_CONTAINER_MTU
+#     Assume container network's MTU is this value. Currently this will be
+#     passed to docker-in-docker's command line. This must be <= to the k8s
+#     container network's MTU.
+#
 
 notice_warn () {
     local tty_on tty_off
diff --git a/stx/lib/stx/config.py b/stx/lib/stx/config.py
index 210a59e8..7d2f23cc 100644
--- a/stx/lib/stx/config.py
+++ b/stx/lib/stx/config.py
@@ -81,6 +81,8 @@ class Config:
         else:
             self._insecure_docker_reg_list = []
 
+        self._container_mtu = os.getenv('STX_CONTAINER_MTU')
+
     def load(self):
         """Load stx.conf"""
         self.data = stx_configparser.STXConfigParser(self.config_filename)
@@ -118,6 +120,11 @@ class Config:
         """List of insecure docker registries we are allowed to access"""
         return self._insecure_docker_reg_list
 
+    @property
+    def container_mtu(self):
+        """Container network MTU value"""
+        return self._container_mtu
+
     def _init_kubectl_cmd(self):
         # helm
         self.helm_cmd = 'helm'
diff --git a/stx/lib/stx/stx_control.py b/stx/lib/stx/stx_control.py
index a2f05136..f91dab79 100644
--- a/stx/lib/stx/stx_control.py
+++ b/stx/lib/stx/stx_control.py
@@ -208,6 +208,9 @@ stx-pkgbuilder/configmap/')
         for reg_index, reg in enumerate(self.config.insecure_docker_reg_list):
             cmd += f' --set stx-docker.insecureRegistries[{reg_index}]={reg}'
 
+        if self.config.container_mtu:
+            cmd += f' --set stx-docker.mtu={self.config.container_mtu}'
+
         self.logger.debug('Execute the helm start command: %s', cmd)
         helm_status = self.k8s.helm_release_exists(self.projectname)
         if helm_status:
diff --git a/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/templates/deployment.yaml b/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/templates/deployment.yaml
index 1ac52e49..0199f640 100644
--- a/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/templates/deployment.yaml
+++ b/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/templates/deployment.yaml
@@ -37,11 +37,13 @@ spec:
           env:
           - name: DOCKER_TLS_CERTDIR
             value: ""
-          command:
-          - "/usr/local/bin/dockerd-entrypoint.sh"
+          args:
           {{- range .Values.insecureRegistries }}
           - "--insecure-registry={{ . }}"
           {{- end }}
+          {{- if .Values.mtu }}
+          - "--mtu={{ .Values.mtu }}"
+          {{- end }}
           volumeMounts:
           - name: shared-workspace
             mountPath: {{ .Values.volumes.sharedWorkspace.mountPath }}
diff --git a/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/values.yaml b/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/values.yaml
index 53db945d..d2c22df6 100644
--- a/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/values.yaml
+++ b/stx/stx-build-tools-chart/stx-builder/dependency_chart/stx-docker/values.yaml
@@ -32,6 +32,10 @@ dnsConfig:
 insecureRegistries:
 #  - "registry.address:port"
 
+# Pass --mtu to docker daemon
+# mtu: "1410"
+mtu:
+
 imagePullSecrets: []
 nameOverride: ""
 fullnameOverride: ""