Add option to specify additional containers in helm chart

Signed-off-by: Christian Baumann <thechristschn@gmail.com>

Author: Christian Baumann

charts/flagger/README.md

@@ -177,7 +177,8 @@ The following tables lists the configurable parameters of the Flagger chart and
 | `podDisruptionBudget.minAvailable`   | The minimal number of available replicas that will be set in the PodDisruptionBudget                                                               | `1`                                   |
 | `podDisruptionBudget.minAvailable`   | The minimal number of available replicas that will be set in the PodDisruptionBudget                                                               | `1`                                   |
 | `noCrossNamespaceRefs`               | If `true`, cross namespace references to custom resources will be disabled                                                                         | `false`                               |
-| `namespace`                          | When specified, Flagger will restrict itself to watching Canary objects from that namespace                                                                   | `""`                                  |
+| `additionalContainers`               | List of additional containers that will be added to the deployment                                                                                 | `[]`                                  |
+| `namespace`                          | When specified, Flagger will restrict itself to watching Canary objects from that namespace                                                        | `""`                                  |
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm upgrade`. For example,
 

charts/flagger/templates/deployment.yaml

@@ -167,6 +167,9 @@ spec:
           {{- end }}
           resources:
 {{ toYaml .Values.resources | indent 12 }}
+        {{- if .Values.additionalContainers }}
+          {{- toYaml .Values.additionalContainers | nindent 8}}
+        {{- end }}
     {{- with .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml . | indent 8 }}

charts/flagger/values.yaml

@@ -177,3 +177,5 @@ podDisruptionBudget:
 podLabels: {}
 
 noCrossNamespaceRefs: false
+
+additionalContainers: []