fix(ethtool): add variable for image tag
diff --git a/roles/prometheus_ethtool_exporter/defaults/main.yml b/roles/prometheus_ethtool_exporter/defaults/main.yml
new file mode 100644
index 0000000..c4b6723
--- /dev/null
+++ b/roles/prometheus_ethtool_exporter/defaults/main.yml
@@ -0,0 +1 @@
+prometheus_ethtool_exporter_image_tag: 5f05120a743a71adcbceb9f8ee1d43ecc7c4183a
diff --git a/roles/prometheus_ethtool_exporter/tasks/main.yml b/roles/prometheus_ethtool_exporter/tasks/main.yml
index 64ef2ac..21fa9b8 100644
--- a/roles/prometheus_ethtool_exporter/tasks/main.yml
+++ b/roles/prometheus_ethtool_exporter/tasks/main.yml
@@ -31,7 +31,7 @@
                       valueFrom:
                         fieldRef:
                           fieldPath: status.podIP
-                  image: quay.io/vexxhost/ethtool-exporter:5f05120a743a71adcbceb9f8ee1d43ecc7c4183a
+                  image: quay.io/vexxhost/ethtool-exporter:{{ prometheus_ethtool_exporter_image_tag }}
                   args:
                     - "-L"
                     - "$(IP)"