Added Haskell

build/Dockerfile

@@ -57,10 +57,35 @@ RUN curl -fsL --show-error ${URL} | tar xfz - -C /usr/share && \
 	chmod -R 755 /usr/share/scala && \
 	ln -s /usr/share/scala/bin/* /usr/local/bin
 
-FROM scala AS lth
+FROM scala AS haskell-init
+
+# Install required C libraries and build tools for Haskell/GHC
+RUN apt-get install -y \
+	build-essential \
+	libgmp-dev \
+	libffi-dev \
+	libnuma-dev \
+	zlib1g-dev \
+	libtinfo-dev
+
+# Install ghcup and Haskell tools globally in /opt
+ENV GHCUP_INSTALL_BASE_PREFIX=/opt
+ENV PATH="/opt/.ghcup/bin:${PATH}"
+
+RUN curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | \
+	BOOTSTRAP_HASKELL_NONINTERACTIVE=1 \
+	BOOTSTRAP_HASKELL_GHC_VERSION=latest \
+	BOOTSTRAP_HASKELL_CABAL_VERSION=latest \
+	BOOTSTRAP_HASKELL_HLS_VERSION=latest \
+	sh
+
+# Ensure the toolchain is readable and executable by all users
+RUN chmod -R a+rX /opt/.ghcup
+
+FROM haskell-init AS lth
 
 # Clears apt lists
-RUN rm -rf /var/lib/apt/lists/* 
+RUN rm -rf /var/lib/apt/lists/*
 
 # Adds the default User
 ARG USER=lth-student