Added Dockerfile

Author: Heliozoa

CONTRIBUTING.md

@@ -10,7 +10,7 @@ cargo build
 
 If you have any troubles building the project, please do make an issue!
 
-## Testing
+## Testing without Docker
 
 Install [zstd 1.5.2](https://github.com/facebook/zstd). For example, on Ubuntu you need the package `libzstd1`. For Windows, download the appropriate archive from the [releases](https://github.com/facebook/zstd/releases), extract it and add the extracted directory to your PATH.
 
@@ -24,7 +24,7 @@ Install [.NET 6.0](https://dotnet.microsoft.com/download).
 
 Install [check](https://libcheck.github.io/check/) (works with at least 0.14 and 0.15), [valgrind](https://valgrind.org/) and `libsubunit0` (or equivalent for your distribution).
 
-Install [R](https://www.r-project.org/), [devtools](https://devtools.r-lib.org/) by running `install.packages("devtools")` in `R` and [tmc-r-tester](https://github.com/testmycode/tmc-rstudio) by running `devtools::install_github("testmycode/tmc-r-tester/tmcRtestrunner", build = FALSE)` in `R`. `devtools` has several dependencies that need to be installed. For Ubuntu, they can be installed with
+Install [R](https://www.r-project.org/), [devtools](https://devtools.r-lib.org/) by running `R -e 'install.packages("devtools")'` and [tmc-r-tester](https://github.com/testmycode/tmc-rstudio) by running `R -e 'devtools::install_github("testmycode/tmc-r-tester/tmcRtestrunner", build = FALSE)'`. `devtools` has several dependencies that need to be installed. For Ubuntu, they can be installed with
 
 ```bash
 sudo apt install libcurl-dev libxml2-dev libopenssl-dev gcc-c++ libharfbuzz-dev libfribidi-dev libfreetype6-dev libpng-dev libtiff5-dev libjpeg-dev
@@ -36,6 +36,14 @@ With the dependencies instaled, the tests can be run with
 cargo test
 ```
 
+## Testing with Docker
+```bash
+export DOCKER_BUILDKIT=1
+docker build . -f docker/Dockerfile -t tmc-langs-rust
+docker run --rm -it tmc-langs-rust bash
+cargo test
+```
+
 ## Formatting and linting
 
 Use `cargo fmt` and `cargo clippy` for formatting and linting. All crates should have the clippy lints `print_stdout` and `print_stderr` set to deny to allow the CLI to have total control over stdout and stderr. The CLI has one function where writing to stdout is allowed.

docker/Dockerfile

@@ -0,0 +1,28 @@
+FROM rust:slim-buster
+
+# C# https://learn.microsoft.com/en-us/dotnet/core/install/linux-debian
+RUN apt update \
+    && apt install -y wget \
+    && wget https://packages.microsoft.com/config/debian/11/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
+    && dpkg -i packages-microsoft-prod.deb \
+    && rm packages-microsoft-prod.deb
+
+# install deps
+RUN apt update \
+    && apt install -y \
+        # core libraries
+        libzstd-dev \
+        # languages
+        npm \
+        python3 \
+        openjdk-11-jdk \
+        dotnet-sdk-6.0 \
+        check valgrind \
+        r-base r-cran-devtools \
+    # https://github.com/testmycode/tmc-r-tester/
+    && R -e 'devtools::install_github("testmycode/tmc-r-tester/tmcRtestrunner", build = FALSE)'
+
+COPY . /build
+WORKDIR /build
+
+RUN cargo check --tests --all-features

docker/Dockerfile.dockerignore

@@ -0,0 +1,4 @@
+**/.git
+**/target
+**/node_modules
+**/*.node