reorganized docker build.

Dockerfile

@@ -0,0 +1,78 @@
+FROM node:15 AS frontend
+
+WORKDIR /usr/src/paperless/src-ui/
+
+COPY src-ui/package* ./
+RUN npm install
+
+COPY src-ui .
+RUN node_modules/.bin/ng build --prod --output-hashing none --sourceMap=false
+
+FROM python:3.7-slim
+
+WORKDIR /usr/src/paperless/
+
+COPY Pipfile* ./
+
+#Dependencies
+RUN apt-get update \
+  && apt-get -y --no-install-recommends install \
+		build-essential \
+		curl \
+		ghostscript \
+		gnupg \
+		icc-profiles-free \
+		imagemagick \
+		libatlas-base-dev \
+		liblept5 \
+		libmagic-dev \
+		libpoppler-cpp-dev \
+		libpq-dev \
+		libqpdf-dev \
+		libxml2 \
+		optipng \
+		pngquant \
+		qpdf \
+		sudo \
+		tesseract-ocr \
+		tesseract-ocr-eng \
+		tesseract-ocr-deu \
+		tesseract-ocr-fra \
+		tesseract-ocr-ita \
+		tesseract-ocr-spa \
+		tzdata \
+		unpaper \
+		zlib1g \
+	&& pip3 install --upgrade supervisor setuptools pipenv \
+  && pipenv install --system --deploy --ignore-pipfile --clear \
+	&& apt-get -y purge build-essential libqpdf-dev \
+	&& apt-get -y autoremove --purge \
+	&& rm -rf /var/lib/apt/lists/* \
+	&& mkdir /var/log/supervisord /var/run/supervisord
+
+# copy scripts
+# this fixes issues with imagemagick and PDF
+COPY docker/imagemagick-policy.xml /etc/ImageMagick-6/policy.xml
+COPY docker/gunicorn.conf.py ./
+COPY docker/supervisord.conf /etc/supervisord.conf
+COPY docker/docker-entrypoint.sh /sbin/docker-entrypoint.sh
+
+# copy app
+COPY src/ ./src/
+COPY --from=frontend /usr/src/paperless/src-ui/dist/paperless-ui/ /usr/src/paperless/src/documents/static/frontend/
+
+# add users, setup scripts
+RUN addgroup --gid 1000 paperless \
+	&& useradd --uid 1000 --gid paperless --home-dir /usr/src/paperless paperless \
+	&& chown -R paperless:paperless . \
+	&& chmod 755 /sbin/docker-entrypoint.sh
+
+WORKDIR /usr/src/paperless/src/
+
+RUN sudo -HEu paperless python3 manage.py collectstatic --clear --no-input
+
+VOLUME ["/usr/src/paperless/data", "/usr/src/paperless/media", "/usr/src/paperless/consume", "/usr/src/paperless/export"]
+ENTRYPOINT ["/sbin/docker-entrypoint.sh"]
+CMD ["/usr/local/bin/supervisord", "-c", "/etc/supervisord.conf"]
+
+LABEL maintainer="Jonas Winkler <dev@jpwinkler.de>"