feat(helm): add value to customise env vars of job controller (#781)

Author: mdonadoni

helm/reana/README.md

@@ -10,6 +10,7 @@ This Helm automatically prefixes all names using the release name to avoid colli
 |----------------------------------------------------------|--------------------------------------------------------------------------------------|-------------------------------------------------|
 | `components.reana_db.enabled`                            | Instantiate a PostgreSQL database inside the cluster                                 | true                                            |
 | `components.reana_db.image`                              | [PostgreSQL image](https://hub.docker.com/_/postgres) to use                         | `docker.io/library/postgres:12.13`              |
+| `components.reana_job_controller.environment`            | [REANA-Job-Controller](https://github.com/reanahub/reana-job-controller) environment variables | `{}`                                  |
 | `components.reana_job_controller.image`                  | [REANA-Job-Controller image](https://hub.docker.com/r/reanahub/reana-job-controller) to use  | `docker.io/reanahub/reana-job-controller:<chart-release-version>` |
 | `components.reana_message_broker.image`                  | [REANA-Message-Broker image](https://hub.docker.com/r/reanahub/reana-message-broker) to use | `docker.io/reanahub/reana-message-broker:<chart-release-version>` |
 | `components.reana_message_broker.imagePullPolicy`        | REANA-Message-Broker image pull policy                                               | IfNotPresent                                    |

helm/reana/templates/reana-workflow-controller.yaml

@@ -155,6 +155,9 @@ spec:
             value: {{ .Values.components.reana_workflow_engine_snakemake.environment | toJson | quote }}
           - name: REANA_WORKFLOW_ENGINE_YADAGE_ENV_VARS
             value: {{ .Values.components.reana_workflow_engine_yadage.environment | toJson | quote }}
+          # Environment variables for job controller
+          - name: REANA_JOB_CONTROLLER_ENV_VARS
+            value: {{ .Values.components.reana_job_controller.environment | toJson | quote }}
           {{- if .Values.reana_hostname }}
           - name: REANA_HOSTNAME
             value: {{ .Values.reana_hostname }}

helm/reana/values.yaml

@@ -120,6 +120,7 @@ components:
     environment: {}
   reana_job_controller:
     image: docker.io/reanahub/reana-job-controller:0.9.2
+    environment: {}
   reana_message_broker:
     imagePullPolicy: IfNotPresent
     image: docker.io/reanahub/reana-message-broker:0.9.2