Update README to add information on env variables (#351)

* Update README to add information on env variables

References #349

* Set APP_URL to https if TLS enabled

charts/invoiceninja/Chart.yaml

@@ -13,7 +13,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.4.0
+version: 0.4.1
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.

charts/invoiceninja/README.md

@@ -236,10 +236,49 @@ The above command sets the number of replicas to 3 for a highly available (HA) s
 
 Alternatively, a YAML file that specifies the values for the parameters can be provided while [installing](https://helm.sh/docs/helm/helm_install/) the chart. For example,
 
+```yaml
+# values.yaml
+appKey: changeit
+replicaCount: 3
+nginx:
+  replicaCount: 3
+redis:
+  cluster:
+    slaveCount: 3
+  password: changeit
+mariadb:
+  auth:
+    rootPassword: changeit
+    password: changeit
+```
+
 ```bash
 helm install invoiceninja -f values.yaml invoiceninja/invoiceninja
 ```
 
+## Setting Environment Variables
+
+Should you need to inject any environment variables into the `invoiceninja` container, you can use the `extraEnvVars` option:
+
+```yaml
+# ... values.yaml file
+# In this example, we are forcing REQUIRE_HTTPS to be false
+extraEnvVars:
+  - name: REQUIRE_HTTPS
+    value: 'false' # all values must be strings, so other types must be surrounded in quotes
+```
+
+Alternatively you can provide the name of an existing `configmap` or `secret` object:
+
+```bash
+kubectl create configmap examplemap --from-literal=REQUIRE_HTTPS='false'
+```
+
+```yaml
+# ... values.yaml file
+extraEnvVarsCM: examplemap
+```
+
 ## Upgrading
 
 Nothing yet.

charts/invoiceninja/templates/configmap.yaml

@@ -13,7 +13,11 @@ metadata:
   {{- end }}
 data:
   {{- if .Values.nginx.ingress.enabled }}
+  {{- if .Values.nginx.ingress.tls }}
+  APP_URL: "https://{{ .Values.nginx.ingress.hostname }}"
+  {{- else }}
   APP_URL: "http://{{ .Values.nginx.ingress.hostname }}"
+  {{- end }}
   {{- else }}
   APP_URL: "http://{{ include "common.names.fullname" . }}"
   {{- end }}