Use Dockerfile with CMake (#10896)

- Use docker.openmodelica.org/build-deps-cmake:v1.16.3 with already installed
    CMake v3.17.2

.CI/cache-bionic-cmake-3.17.2/Dockerfile

@@ -1,11 +1,6 @@
 # Cannot be parametrized in Jenkins...
-FROM docker.openmodelica.org/build-deps:v1.16.3
+FROM docker.openmodelica.org/build-deps-cmake:v1.16.3
 
 # We don't know the uid of the user who will build, so make the /cache directories world writable
 RUN mkdir -p /cache/runtest/ /cache/omlibrary/ && chmod ugo+rwx /cache/runtest/ /cache/omlibrary/ \
     && apt-get remove -qy cmake cmake-data
-
-# Install cmake 3.17.2.
-RUN wget cmake.org/files/v3.17/cmake-3.17.2-Linux-x86_64.sh
-RUN mkdir -p /opt/cmake-3.17.2
-RUN sh cmake-3.17.2-Linux-x86_64.sh --prefix=/opt/cmake-3.17.2 --skip-license