The issue I encountered while deploying a demo via Helm according to the official documentation

[caozhangni]

I encountered an issue while deploying a demo via Helm according to the official documentation(https://opentelemetry.io/docs/demo/kubernetes-deployment/#configure-browser-telemetry). The documentation suggests modifying the PUBLIC_OTEL_EXPORTER_OTLP_TRACES_ENDPOINT via env, but I found that this causes some environment variables to be lost, leading to abnormal functioning of the frontend component. The list of environment variables in the container is as follows:

Environment:
OTEL_SERVICE_NAME: (v1:metadata.labels['app.kubernetes.io/component'])
OTEL_COLLECTOR_NAME: my-otel-demo-otelcol
OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE: cumulative
PUBLIC_OTEL_EXPORTER_OTLP_TRACES_ENDPOINT: http://otel.czn.com/otlp-http/v1/traces
OTEL_RESOURCE_ATTRIBUTES: service.name=$(OTEL_SERVICE_NAME),service.namespace=opentelemetry-demo

After replacing it with envOverride, the issue was resolved, and everything worked well:

Environment:
OTEL_SERVICE_NAME: (v1:metadata.labels['app.kubernetes.io/component'])
OTEL_COLLECTOR_NAME: my-otel-demo-otelcol
OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE: cumulative
FRONTEND_PORT: 8080
FRONTEND_ADDR: :8080
AD_SERVICE_ADDR: my-otel-demo-adservice:8080
CART_SERVICE_ADDR: my-otel-demo-cartservice:8080
CHECKOUT_SERVICE_ADDR: my-otel-demo-checkoutservice:8080
CURRENCY_SERVICE_ADDR: my-otel-demo-currencyservice:8080
PRODUCT_CATALOG_SERVICE_ADDR: my-otel-demo-productcatalogservice:8080
RECOMMENDATION_SERVICE_ADDR: my-otel-demo-recommendationservice:8080
SHIPPING_SERVICE_ADDR: my-otel-demo-shippingservice:8080
OTEL_COLLECTOR_HOST: $(OTEL_COLLECTOR_NAME)
OTEL_EXPORTER_OTLP_ENDPOINT: http://$(OTEL_COLLECTOR_NAME):4317
WEB_OTEL_SERVICE_NAME: frontend-web
PUBLIC_OTEL_EXPORTER_OTLP_TRACES_ENDPOINT: http://otel.czn.com/otlp-http/v1/traces
OTEL_RESOURCE_ATTRIBUTES: service.name=$(OTEL_SERVICE_NAME),service.namespace=opentelemetry-demo

[puckpuck]

This is a docs bug. I made issue #1467 to track getting this fixed.

[caozhangni]

Thanks!