Re-add nvim-treesitter plugin

Dockerfile

@@ -1,14 +1,21 @@
 FROM debian:unstable
 
-RUN apt-get update
-RUN apt-get install -q -y locales git curl ripgrep tree-sitter-cli build-essential neovim
-RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+RUN apt-get update \
+ && apt-get install -q -y locales git curl ripgrep tree-sitter-cli build-essential neovim
+
+RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen \
+ && locale-gen
 ENV LANG=en_US.UTF-8
 ENV LANGUAGE=en_US:en
 ENV LC_ALL=en_US.UTF-8
-WORKDIR /opt/app
+
+WORKDIR /opt
+
 COPY init.vim .
-RUN mkdir -p ~/.config/nvim && mv ./init.vim ~/.config/nvim
+RUN mkdir -p ~/.config/nvim \
+ && mv ./init.vim ~/.config/nvim
+
 RUN sh -c 'curl -fLo ~/.local/share/nvim/site/autoload/plug.vim --create-dirs  https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
+
 RUN nvim -c "PlugInstall" -c "qall" \
  && nvim -c "TSUpdate" -c "qall"

README.md

@@ -4,4 +4,4 @@
 
 ## start a docker container
 
-    docker run --rm -it -v $PWD:/opt/app nvim:latest nvim
+    docker run --rm -it -v $PWD:/opt nvim:latest nvim

init.vim

@@ -20,7 +20,7 @@ call plug#begin()
 Plug 'nvim-tree/nvim-web-devicons' " optional
 Plug 'nvim-tree/nvim-tree.lua'
 
-"Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate', 'branch': 'master'}
+Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
 
 "Plug 'mg979/vim-visual-multi', {'branch': 'master'}