spack-cgcore: forgot to add wget the the installed packages

dockerfiles/Dockerfile.spack-cgcore

@@ -25,7 +25,7 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 # 02/23: pkg-config added. Used by gts
 # 02/23: lsb-release added. Used by mgx start script.
 RUN apt update &&\
-    apt install -y build-essential cmake python3 python3-distutils python3-venv unzip zip curl git libxt-dev libgl-dev gfortran autoconf pkg-config lsb-release file &&\
+    apt install -y build-essential cmake python3 python3-distutils python3-venv unzip zip curl git libxt-dev libgl-dev gfortran autoconf pkg-config lsb-release file wget &&\
     apt clean &&\
     rm -rf /var/lib/apt/lists/*
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