Fix CI build. Latest version of npm is no longer installable in node …

…v18.x

webapp/Dockerfile

@@ -8,7 +8,7 @@ RUN apt-get update -y && \
 RUN apt-get install -y vim
 
 # Get node and npm
-RUN apt install -y nodejs && apt-get install -y npm && npm install -g npm@latest
+RUN apt install -y nodejs && apt install -y npm
 
 # Install Rust - for tokenziers dep in medcat.
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y