[I] gRPC with jmeter is not working in alpine/jmeter:5.6.3 image [jmeter]

[via GitHub]

PraveenDhasarathan opened a new issue, #6404:
URL: https://github.com/apache/jmeter/issues/6404

   ### Expected behavior
   
   Jmeter should be able to run the gRPC request sampler inside the image
   
   ### Actual behavior
   
   Getting a below error:
   2025-01-08 10:33:25,530 ERROR v.z.b.GRPCSampler: java.lang.RuntimeException: 
Unable to resolve service by invoking protoc: 
   Unable to execute protoc binary
           at vn.zalopay.benchmark.core.ClientCaller.init(ClientCaller.java:88)
           at 
vn.zalopay.benchmark.core.ClientCaller.<init>(ClientCaller.java:53)
           at 
vn.zalopay.benchmark.GRPCSampler.initGrpcClient(GRPCSampler.java:81)
           at 
vn.zalopay.benchmark.GRPCSampler.initGrpcInCurrentThread(GRPCSampler.java:203)
           at 
vn.zalopay.benchmark.GRPCSampler.initGrpcRequestSampler(GRPCSampler.java:133)
           at vn.zalopay.benchmark.GRPCSampler.sample(GRPCSampler.java:90)
           at 
org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:651)
           at 
org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:570)
           at 
org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:501)
           at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:268)
           at java.lang.Thread.run(Thread.java:750)
   
   ### Steps to reproduce the problem
   
   **Create a Docker file:**
   FROM alpine/jmeter:5.6.3
   // Copied the below library from my local jmeter 5.6.3
   COPY ./lib/jmeter-grpc-request.jar 
/opt/apache-jmeter-5.6.3/lib/ext/jmeter-grpc-request.jar
   COPY ./lib/jmeter-plugins-manager-1.10.jar 
/opt/apache-jmeter-5.6.3/lib/ext/jmeter-plugins-manager-1.10.jar
   RUN apk add protobuf
   COPY ./scripts/GRPC_Request.jmx 
/opt/apache-jmeter-5.6.3/scripts/GRPC_Request.jmx
   
   **Docker build command:**
   docker build . -t load-testing:manager-load-testing_v1 --no-cache
   
   **Create a proto file:**
   syntax = "proto3";
   
   package com.grpc.spring;
   option java_package = "com.grpc.spring.service";
   option java_outer_classname = "Solutions";
   option java_generic_services = true;
   option java_multiple_files = true;
   
   service SolutionService {
     rpc getSolution (SolutionRequest) returns (SolutionResponse) {};
   }
   
   message SolutionRequest {
     string name = 1;
   }
   message SolutionResponse {
     string message = 1;
   }
   
   I created a Jmeter GRPC request sampler using the UI and copied the Jmeter 
script to an image and used the below command to run the Docker image:
   docker run -it --entrypoint bash --rm --user root 
load-testing:manager-load-testing_v1
   
   jmeter -n -t scripts/GRPC_Request.jmx -l result.jtl -JThreads=1 -JRamup=1 
-JLoopCount=1 -JprotoFilePath=/opt/apache-jmeter-5.6.3/scripts/test_data 
-Jhost=host.docker.internal -Jport=9092 -e -o ./dashboard_directory
   
   Note: Same script works in my local JMeter GUI. which has protoc version as 
local: libprotoc 28.3 but in the Image: libprotoc 24.4
   
   ### JMeter Version
   
   5.6.3
   
   ### Java Version
   
   openjdk version "1.8.0_432"
   
   ### OS Version
   
   Alpine Linux v3.21


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