Use a newer vim; vimspector requires latest builds

tests/ci/image/Dockerfile

@@ -4,9 +4,9 @@ ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && \
   apt-get -y dist-upgrade && \
-  apt-get -y install python3 \
+  apt-get -y install python3-dev \
                      ca-cacert \
-                     vim \
+                     libncurses5-dev libncursesw5-dev \
                      git \
                      tcl-dev \
                      tcllib && \
@@ -14,3 +14,16 @@ RUN apt-get update && \
 
 RUN ln -fs /usr/share/zoneinfo/Europe/London /etc/localtime && \
   dpkg-reconfigure --frontend noninteractive tzdata
+
+RUN mkdir -p $HOME/vim && \
+    cd $HOME/vim && \
+    git clone https://github.com/vim/vim && \
+    cd vim && \
+    git checkout v8.1.0958 && \
+    ./configure --with-features=huge \
+                --enable-python3interp \
+                --enable-terminal \
+                --enable-multibyte \
+                --enable-fail-if-missing && \
+    make -j 8 install
+