Proxy work around for alpine collectd

Add Dockerfile for building an alpine image with collectd.

Published an image to dockerhub and reference it in collectd.yaml

Signed-off-by: David Lyle <dklyle0@gmail.com>

Author: dklyle

metrics/collectd/Dockerfile

@@ -0,0 +1,5 @@
+FROM alpine:latest
+
+RUN apk update && apk add collectd
+
+CMD [ "collectd", "-f" ]

metrics/collectd/collectd.yaml

@@ -19,16 +19,15 @@ spec:
       terminationGracePeriodSeconds: 0
       containers:
         - name: collectd
-          image: alpine:latest
+          image: dklyle/alpine-collectd:1.0
           imagePullPolicy: IfNotPresent
           securityContext:
             # Run a priv container so we really do measure what is happening on the
             # host (node) system
             privileged: true
           command: ["/bin/sh", "-c"]
           args:
-            - apk update && apk add collectd;
-              collectd -f;
+            - collectd -f;
           volumeMounts:
             - name: collectd-config-volume
               mountPath: /etc/collectd