dockerize backend server

docker/Dockerfile

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+FROM nikolaik/python-nodejs:python3.9-nodejs15
+
+RUN wget -qO- https://github.com/strukturag/pdfdraw/archive/v0.1.2.tar.gz | tar -C /tmp -xvz --strip 1
+RUN cp -r /tmp/server /app
+ADD config.js.docker /app/config.js
+
+RUN apt-get update || : && apt-get install pdftk python-pypdf2 -y
+
+WORKDIR /app
+
+RUN pip install svglib
+RUN npm install 
+
+CMD ["node", "server.js"]

docker/README.md

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+# run pdfdraw backend in a docker container using docker-compose.
+
+all settings are exposed into enviroment variables. That means you are able to config the backend server in [docker-compose.yml](docker-compose.yml) yaml file by edting the corresponding enviroment variables.
+
+Than run docker compose.
+
+    docker-compose up -d
+

docker/config.js.docker

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+var config = {};
+
+// The port the service should run on.
+config.port = process.env.port || 8080;
+
+// The shared secret for token validation. Must be the same value
+// as configured in the Nextcloud admin interface.
+config.secret = process.env.secret || 'the-shared-secret';
+
+// INSECURE! Allow any self-signed / expired certificates.
+// Only use this during development!
+config.allow_invalid_certificates = process.env.allow_invalid_certificates || false;
+
+// Required for newer versions of node / libssl.
+// See https://github.com/nodejs/node/issues/21513#issuecomment-399790415
+config.use_auto_ecdh_curve = process.env.use_auto_ecdh_curve || false;
+
+// Command to use when running pdftk. Defaults to 'pdftk' if not configured.
+config.cmd_pdftk = process.env.cmd_pdftk || '';
+
+// Command to use when running svg2pdf. Defaults to 'svg2pdf' if not configured.
+config.cmd_svg2pdf = process.env.cmd_svg2pdf || '';
+
+module.exports = config;

docker/docker-compose.yml

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+version: '2'
+services:
+  pdfdraw-server:
+    build:
+      context: .
+    environment:
+      port: 8080
+      secret: 'the-shared-secret'