test: add dockerfile as testing option (#417)

Author: danilshvalov

Dockerfile

@@ -0,0 +1,18 @@
+FROM ubuntu:22.04
+
+RUN apt update
+# install neovim dependencies
+RUN apt install -y git ninja-build gettext libtool libtool-bin autoconf \
+                   automake cmake g++ pkg-config unzip curl doxygen
+
+# install neovim
+RUN git clone https://github.com/neovim/neovim
+RUN cd neovim && make CMAKE_BUILD_TYPE=RelWithDebInfo && make install
+
+# install required plugins
+ARG PLUG_DIR="root/.local/share/nvim/site/pack/packer/start"
+RUN git clone https://github.com/nvim-lua/plenary.nvim $PLUG_DIR/plenary.nvim
+RUN git clone https://github.com/MunifTanjim/nui.nvim $PLUG_DIR/nui.nvim
+COPY . $PLUG_DIR/neo-tree.nvim
+
+WORKDIR $PLUG_DIR/neo-tree.nvim

Makefile

@@ -5,7 +5,12 @@ test:
 	nvim --headless --noplugin -u tests/mininit.lua -c "lua require('plenary.test_harness').test_directory('tests/neo-tree/', {minimal_init='tests/mininit.lua',sequential=true})"
 	@echo ""
 	@echo "TEST WITH follow_current_file = true"
-	nvim --headless --noplugin -u tests/init_follow_current_file.lua -c"lua require('plenary.test_harness').test_directory('tests/neo-tree/', {minimal_init='tests/init_follow_current_file.lua',sequential=true})" 
+	nvim --headless --noplugin -u tests/init_follow_current_file.lua -c"lua require('plenary.test_harness').test_directory('tests/neo-tree/', {minimal_init='tests/init_follow_current_file.lua',sequential=true})"
+
+.PHONY: test-docker
+test-docker:
+	docker build -t neo-tree .
+	docker run --rm neo-tree make test
 
 .PHONY: format
 format: