fix: install treesitter parsers into docker image

Co-authored-by: Dmytro Soltys <soap@slotos.net>

vim.Dockerfile

@@ -9,14 +9,24 @@ ARG VIM_VERSION=v9.1.1287
 ADD --chmod=755 https://github.com/vim/vim-appimage/releases/download/${VIM_VERSION}/Vim-${VIM_VERSION}.glibc2.29-x86_64.AppImage /vim-linux-x86_64.appimage
 RUN /vim-linux-x86_64.appimage --appimage-extract
 
+FROM rust:latest AS tree-sitter
+WORKDIR /work
+RUN cargo install tree-sitter-cli --root /
+ADD https://github.com/tree-sitter/tree-sitter-ruby.git /work/tree-sitter-ruby
+RUN cd tree-sitter-ruby \
+    && tree-sitter build -o /work/ruby.so
+ADD https://github.com/tree-sitter/tree-sitter-python.git /work/tree-sitter-python
+RUN cd tree-sitter-python \
+    && tree-sitter build -o /work/python.so
+
 FROM python:latest AS base
 RUN --mount=target=/var/lib/apt/lists,type=cache,sharing=locked \
     --mount=target=/var/cache/apt,type=cache,sharing=locked \
     apt-get update -qq && \
     apt-get install --no-install-recommends -y \
-      git \
-      ca-certificates \
-      make
+    git \
+    ca-certificates \
+    make
 
 FROM base AS test-prep
 WORKDIR /work
@@ -27,6 +37,11 @@ RUN mkdir -p test/vader/vader.vim && git clone --depth=1 https://github.com/june
 
 FROM python:latest AS nvim
 
+WORKDIR /work
+ENV HOME=/work
+ENV GIT_PAGER=cat
+ENV TESTS_ENABLE_TREESITTER=1
+
 # nvim
 COPY --from=neovim-image /squashfs-root /nvim-root
 RUN ln -s /nvim-root/AppRun /bin/nvim
@@ -35,11 +50,12 @@ RUN ln -s /nvim-root/AppRun /bin/nvim
 COPY --from=vim-image /squashfs-root /vim-root
 RUN ln -s /vim-root/AppRun /bin/vim
 
-WORKDIR /work
-ENV HOME=/work
-ENV GIT_PAGER=cat
-
 COPY . .
 COPY --from=test-prep /work/test test
 
+# Treesitter
+RUN mkdir -p /work/.local/share/nvim/site/parser/
+COPY --from=tree-sitter /work/ruby.so /work/.local/share/nvim/site/parser/ruby.so
+COPY --from=tree-sitter /work/python.so /work/.local/share/nvim/site/parser/python.so
+
 ENTRYPOINT ["bash"]