add collector configs as environment variable (open-telemetry#1632)

Co-authored-by: Mikko Viitanen <74129181+mviitane@users.noreply.github.com>

Author: rogercoll

.env

@@ -25,6 +25,8 @@ ENV_PLATFORM=local
 OTEL_COLLECTOR_HOST=otelcol
 OTEL_COLLECTOR_PORT_GRPC=4317
 OTEL_COLLECTOR_PORT_HTTP=4318
+OTEL_COLLECTOR_CONFIG=./src/otelcollector/otelcol-config.yml
+OTEL_COLLECTOR_CONFIG_EXTRAS=./src/otelcollector/otelcol-config-extras.yml
 OTEL_EXPORTER_OTLP_ENDPOINT=http://${OTEL_COLLECTOR_HOST}:${OTEL_COLLECTOR_PORT_GRPC}
 PUBLIC_OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=http://localhost:8080/otlp-http/v1/traces
 

docker-compose.minimal.yml

@@ -584,8 +584,8 @@ services:
     restart: unless-stopped
     command: [ "--config=/etc/otelcol-config.yml", "--config=/etc/otelcol-config-extras.yml" ]
     volumes:
-      - ./src/otelcollector/otelcol-config.yml:/etc/otelcol-config.yml
-      - ./src/otelcollector/otelcol-config-extras.yml:/etc/otelcol-config-extras.yml
+      - ${OTEL_COLLECTOR_CONFIG}:/etc/otelcol-config.yml
+      - ${OTEL_COLLECTOR_CONFIG_EXTRAS}:/etc/otelcol-config-extras.yml
     ports:
       - "${OTEL_COLLECTOR_PORT_GRPC}"
       - "${OTEL_COLLECTOR_PORT_HTTP}"

docker-compose.yml

@@ -694,8 +694,8 @@ services:
     restart: unless-stopped
     command: [ "--config=/etc/otelcol-config.yml", "--config=/etc/otelcol-config-extras.yml" ]
     volumes:
-      - ./src/otelcollector/otelcol-config.yml:/etc/otelcol-config.yml
-      - ./src/otelcollector/otelcol-config-extras.yml:/etc/otelcol-config-extras.yml
+      - ${OTEL_COLLECTOR_CONFIG}:/etc/otelcol-config.yml
+      - ${OTEL_COLLECTOR_CONFIG_EXTRAS}:/etc/otelcol-config-extras.yml
     ports:
       - "${OTEL_COLLECTOR_PORT_GRPC}"
       - "${OTEL_COLLECTOR_PORT_HTTP}"