fix: pass proper env var to tracetesting Dockerfile

CHANGELOG.md

@@ -7,6 +7,8 @@ release.
 
 ## Unreleased
 
+* fix env var for pinning trace-based test tool version
+  ([#1283](https://github.com/open-telemetry/opentelemetry-demo/pull/1283))
 * [currencyservice] bring back multistage build
   ([#1276](https://github.com/open-telemetry/opentelemetry-demo/pull/1276))
 * [currencyservice]: update opentelemetry-cpp to 1.12.0

docker-compose.minimal.yml

@@ -639,6 +639,8 @@ services:
     build:
       context: ./
       dockerfile: ./test/tracetesting/Dockerfile
+      args:
+        - TRACETEST_IMAGE_VERSION
     environment:
       - AD_SERVICE_ADDR
       - CART_SERVICE_ADDR

docker-compose.yml

@@ -784,6 +784,8 @@ services:
     build:
       context: ./
       dockerfile: ./test/tracetesting/Dockerfile
+      args:
+        - TRACETEST_IMAGE_VERSION
     environment:
       - AD_SERVICE_ADDR
       - CART_SERVICE_ADDR

test/tracetesting/Dockerfile

@@ -6,6 +6,8 @@ FROM alpine
 
 WORKDIR /app
 
+ARG TRACETEST_IMAGE_VERSION
+
 RUN apk --update add bash jq curl
 RUN curl -L https://raw.githubusercontent.com/kubeshop/tracetest/main/install-cli.sh | bash -s -- ${TRACETEST_IMAGE_VERSION}