diff --git a/deployment/helm/webapp-polder/templates/configmap.yaml b/deployment/helm/webapp-polder/templates/configmap.yaml
new file mode 100644
index 0000000..89077a5
--- /dev/null
+++ b/deployment/helm/webapp-polder/templates/configmap.yaml
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "webapp-polder.fullname" . }}-configmap
+data:
+  app_config.js: |
+    window.__APP_CONFIG__ = {
+        MAPBOX_TOKEN: "{{ .Values.mapboxToken }}",
+        STAC_API: "{{ .Values.stacApi }}",
+        TILER_API: "{{ .Values.tilerApi }}",
+    };
diff --git a/deployment/helm/webapp-polder/templates/deployment.yaml b/deployment/helm/webapp-polder/templates/deployment.yaml
index ccf0400..627fdc3 100644
--- a/deployment/helm/webapp-polder/templates/deployment.yaml
+++ b/deployment/helm/webapp-polder/templates/deployment.yaml
@@ -46,14 +46,20 @@ spec:
             {{- toYaml .Values.readinessProbe | nindent 12 }}
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
-          {{- with .Values.volumeMounts }}
           volumeMounts:
+          {{- with .Values.volumeMounts }}
             {{- toYaml . | nindent 12 }}
           {{- end }}
-      {{- with .Values.volumes }}
+            - name: {{ include "webapp-polder.fullname" . }}-config
+              mountPath: /usr/share/nginx/html/app_config.js
+              subPath: app_config.js
       volumes:
+      {{- with .Values.volumes }}
         {{- toYaml . | nindent 8 }}
       {{- end }}
+        - name: {{ include "webapp-polder.fullname" . }}-config
+          configMap:
+            name: {{ include "webapp-polder.fullname" . }}-configmap
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
diff --git a/deployment/helm/webapp-polder/values.yaml b/deployment/helm/webapp-polder/values.yaml
index ea97a29..4c0b9cf 100644
--- a/deployment/helm/webapp-polder/values.yaml
+++ b/deployment/helm/webapp-polder/values.yaml
@@ -32,7 +32,7 @@ serviceAccount:
   name: ""
 
 # This is for setting Kubernetes Annotations to a Pod.
-# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/ 
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
 podAnnotations: {}
 # This is for setting Kubernetes Labels to a Pod.
 # For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
@@ -121,3 +121,8 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+# polder custom configuration
+mapboxToken: "token"
+stacApi: "http://localhost:8080"
+tilerApi: "http://localhost:8081"