Fix sonarcube findings (#6242)

* Fix sonarcube findings

* Fix review findings

Dockerfile

@@ -1,9 +1,9 @@
-FROM gcc:latest
+FROM gcc:1.5.1.0
 
-RUN apt-get update && apt-get install --no-install-recommends -y ninja-build cmake
+RUN apt-get update \
+    apt-get install --no-install-recommends -y ninja-build cmake zlib1g-dev
 
 WORKDIR /app
-RUN apt install zlib1g-dev
 
 COPY . .