vim.tiny becomes vim-tiny in bullseye

Dockerfile

@@ -28,7 +28,7 @@ RUN \
   apt install -y curl && \
   apt install -y unzip && \
   apt install -y zip && \
-  apt install -y vim.tiny && \
+  apt install -y vim-tiny && \
   apt install -y p7zip-full && \
   apt install -y procps && \
   apt install -y doxygen && \