chore(ci): create Docker image (#355)

* chore(ci): create Docker image

* fix(ci): run only if tag is pushed

* chore(docs): add changelog entry

docker/Dockerfile

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+# Mostly a copy from https://github.com/ManimCommunity/manim/blob/68bd79093e1ebc1ed9f8051942ffe6e72a9e66a7/docker/Dockerfile
+FROM python:3.11-slim
+
+RUN apt-get update -qq \
+    && apt-get install --no-install-recommends -y \
+        ffmpeg \
+        build-essential \
+        gcc \
+        cmake \
+        libcairo2-dev \
+        libffi-dev \
+        libpango1.0-dev \
+        freeglut3-dev \
+        pkg-config \
+        make \
+        wget \
+        ghostscript
+
+# setup a minimal texlive installation
+COPY docker/texlive-profile.txt /tmp/
+ENV PATH=/usr/local/texlive/bin/armhf-linux:/usr/local/texlive/bin/aarch64-linux:/usr/local/texlive/bin/x86_64-linux:$PATH
+RUN wget -O /tmp/install-tl-unx.tar.gz http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz && \
+    mkdir /tmp/install-tl && \
+    tar -xzf /tmp/install-tl-unx.tar.gz -C /tmp/install-tl --strip-components=1 && \
+    /tmp/install-tl/install-tl --profile=/tmp/texlive-profile.txt \
+    && tlmgr install \
+        amsmath babel-english cbfonts-fd cm-super ctex doublestroke dvisvgm everysel \
+        fontspec frcursive fundus-calligra gnu-freefont jknapltx latex-bin \
+        mathastext microtype ms physics preview ragged2e relsize rsfs \
+        setspace standalone tipa wasy wasysym xcolor xetex xkeyval
+
+# clone and build manim-slides
+COPY . /opt/manim-slides
+WORKDIR /opt/manim-slides
+RUN pip install --no-cache manim[jupyterlab] .[sphinx-directive]
+
+ARG NB_USER=manimslidesuser
+ARG NB_UID=1000
+ENV USER ${NB_USER}
+ENV NB_UID ${NB_UID}
+ENV HOME /manim-slides
+
+RUN adduser --disabled-password \
+    --gecos "Default user" \
+    --uid ${NB_UID} \
+    ${NB_USER}
+
+# create working directory for user to mount local directory into
+WORKDIR ${HOME}
+USER root
+RUN chown -R ${NB_USER}:${NB_USER} ${HOME}
+RUN chmod 777 ${HOME}
+USER ${NB_USER}
+
+CMD [ "/bin/bash" ]

docker/README.md

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+# Docker Image
+
+Manim Slides Docker image, highly inspired from the Manim Community Docker image.
+
+Building the image can be done with:
+
+```bash
+docker build -t manimcommunity/manim:TAG -f docker/Dockerfile .
+```
+
+from the root directory of the repository.
+
+> [!WARNING]
+> If you run the command above from another place,
+> Docker will not be able to find expected files.

docker/texlive-profile.txt

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+selected_scheme scheme-minimal
+TEXDIR /usr/local/texlive
+TEXMFCONFIG ~/.texlive/texmf-config
+TEXMFHOME ~/texmf
+TEXMFLOCAL /usr/local/texlive/texmf-local
+TEXMFSYSCONFIG /usr/local/texlive/texmf-config
+TEXMFSYSVAR /usr/local/texlive/texmf-var
+TEXMFVAR ~/.texlive/texmf-var
+option_doc 0
+option_src 0