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fix(docker): fail fast on build patch failures and add healthcheck #2

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33 changes: 23 additions & 10 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,15 @@ LABEL description='Slim Docker container featuring embedded Nut server from blaw
LABEL repo='eskwisit/nut-server'
LABEL email='mru2683@gmail.com'

# Fail the build on any error, including inside pipes
SHELL ["/bin/bash", "-euo", "pipefail", "-c"]

ENV DEBIAN_FRONTEND=noninteractive \
PYTHONUNBUFFERED=1 \
PYTHONFAULTHANDLER=1

# Prepare Nut install
RUN apt-get update && apt-get -y install \
RUN apt-get update && apt-get -y install --no-install-recommends \
wget \
unzip \
gcc \
Expand All @@ -16,31 +23,37 @@ RUN apt-get update && apt-get -y install \
libjpeg-dev

# Fetch Nut codebase
RUN wget https://github.com/blawar/nut/archive/refs/tags/v3.3.zip
RUN unzip v3.3.zip -d /root
RUN wget --no-verbose --tries=3 -O /tmp/nut.zip https://github.com/blawar/nut/archive/refs/tags/v3.3.zip
RUN unzip -q /tmp/nut.zip -d /root
RUN mv /root/nut-3.3 /root/nut
RUN test -f /root/nut/nut.py

# Edit config
RUN mv /root/nut/conf/nut.default.conf /root/nut/conf/nut.conf
RUN sed -i '/scan/c "scan": ["\/titles"]' /root/nut/conf/nut.conf
RUN sed -i '/scan/c "scan": ["\/titles"]' /root/nut/conf/nut.conf \
&& grep -qF '"scan": ["/titles"]' /root/nut/conf/nut.conf

# Remove GUI packages
RUN sed -i '/pyqt5/d' /root/nut/requirements.txt
RUN sed -i '/qt-range-slider/d' /root/nut/requirements.txt
RUN sed -i -e '/pyqt5/d' -e '/qt-range-slider/d' /root/nut/requirements.txt \
&& ! grep -qiE 'pyqt5|qt-range-slider' /root/nut/requirements.txt

# Add missing requirements
RUN echo markupsafe==2.0.1 >>/root/nut/requirements.txt

# Install project dependencies
RUN pip3 install -U pip
RUN pip3 install -r /root/nut/requirements.txt
RUN pip3 install -U --no-cache-dir pip
RUN pip3 install --no-cache-dir -r /root/nut/requirements.txt

VOLUME [ "/titles", "/root/nut/conf", "/root/nut/_NSPOUT" ]

EXPOSE 9000

# Surface a dead or wedged server instead of reporting the container as healthy
HEALTHCHECK --interval=30s --timeout=5s --start-period=180s --retries=3 \
CMD python3 -c "import socket; socket.create_connection(('127.0.0.1', 9000), 3).close()"

# clean up
RUN rm v3.3.zip
RUN apt-get autoremove
RUN rm /tmp/nut.zip
RUN apt-get -y autoremove && apt-get clean && rm -rf /var/lib/apt/lists/*

CMD ["python3", "/root/nut/nut.py", "--server"]
1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -8,6 +8,7 @@ Slim Docker image featuring embedded Nut server from [blawar/nut](https://github
- Very low memory usage.
- Designed to work on amd64 arch (Linux, Unix).
- Auto refresh of titles directory.
- Built-in healthcheck on port 9000.
- Zero config bundle.
- Seamless integration for [Tinfoil](https://tinfoil.io/).

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