Added Docker support

tools/README.md

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+# docker tools
+
+The provided Dockerfile allows one to create a docker container taht builds the diploma thesis.

tools/docker/Dockerfile

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+FROM ubuntu:20.04
+
+# Set the environment variables
+ENV LANG=C.UTF-8 \
+    LC_ALL=C.UTF-8 \
+    DEBIAN_FRONTEND=noninteractive
+
+# Update the package list and install dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    git \
+    build-essential \
+    make \
+    texlive-full \
+    pandoc \
+    pandoc-citeproc \
+    tree \
+    rsync \
+    hunspell \
+    hunspell-de-at \
+    hunspell-en-us && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Set the working directory
+WORKDIR /workspace
+
+# Copy the Diplomarbeit template repository clone command here
+# Uncomment the following line if the repository URL is provided
+# RUN git clone https://itsp.htl-leoben.at/git/Hg/HTLLE-DA-Vorlage.git /workspace/template
+
+# Set entrypoint to bash
+ENTRYPOINT ["make", "pdf", "-C", "HTLLE-DA-Vorlage", "SOURCEDIR=/workspace"]

tools/docker/README.md

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+# docker container
+
+The provided `Dockerfile` can be used to cerate a dockerized build environment where all depenencies are satisfied.
+
+
+## building the environment
+
+In order to build a docker container (in this example it will be namend `diplomarbeit-env` just run the following command on a docker host (Testsd with docker 20.10.22)
+
+~~~~
+$ docker build -t diplomarbeit-env .
+~~~~
+
+This creates a container that contains all dependencies and expects to find your diplomathesis in mounted into the `/workspace` folder. 
+
+Alternatively the image can be pulled from dockerhub. See instructions here:  https://hub.docker.com/r/bytebang/htlle-da-env
+
+
+## usage
+
+One can build the thesis ba running the followin command:
+
+~~~~
+$ docker run -it --rm -v $(pwd):/workspace diplomarbeit-env
+~~~~
+
+This command runs the diplomarbeit-env container interactively, mounts the current directory into the container at /workspace, and automatically cleans up the container after it exits.
+
+Errors and log messages are shown in the console, the file will be written back to the `/workspace` folder.
+This also works with _Docker Desktop_ 
+
+![Docker Dektop settings](docker-desktop.png)