Install in the web server the latest available nginx tracing

web/Dockerfile

@@ -5,18 +5,21 @@ WORKDIR /instana
 
 RUN apk add --update --no-cache curl
 
-RUN if [ -n "$KEY" ]; then curl \
-    --output instana.zip \
-    --user "_:$KEY" \
-    https://artifact-public.instana.io/artifactory/shared/com/instana/nginx_tracing/1.1.2/linux-amd64-glibc-nginx-1.20.1.zip && \
-    unzip instana.zip && \
-    mv glibc-libinstana_sensor.so libinstana_sensor.so && \
-    mv glibc-nginx-1.20.1-ngx_http_ot_module.so ngx_http_opentracing_module.so; \
+RUN if [ -n "$KEY" ]; then nginx_version='1.5.0' \
+    curl --output index.html --user "_:$KEY" https://artifact-public.instana.io/artifactory/shared/com/instana/nginx_tracing/ \
+    nginx_version=$(cat index.html |egrep "a href"| tail -1 | awk '{print $2;}'|sed 's/href="//'|sed 's/\/".*//') \
+    rm index.html \
+    curl \
+     --output instana.zip \
+     --user "_:$KEY" \
+     https://artifact-public.instana.io/artifactory/shared/com/instana/nginx_tracing/$nginx_version/linux-amd64-nginx-1.20.1.zip && \
+     unzip instana.zip && \
+     mv glibc-libinstana_sensor.so libinstana_sensor.so && \
+     mv glibc-nginx-1.20.1-ngx_http_ot_module.so ngx_http_opentracing_module.so; \
     else echo "KEY not provided. Not adding tracing"; \
-    touch dummy.so; \
+        touch dummy.so; \
     fi
 
-
 FROM nginx:1.20.1
 
 EXPOSE 8080