add dockerfile

Dockerfile

@@ -0,0 +1,36 @@
+FROM node:latest AS builder
+
+WORKDIR /opt/mx-puppet-steam
+
+# run build process as user in case of npm pre hooks
+# pre hooks are not executed while running as root
+RUN chown node:node /opt/mx-puppet-steam
+USER node
+
+COPY package.json package-lock.json ./
+RUN npm install
+
+COPY tsconfig.json ./
+COPY src/ ./src/
+RUN npm run build
+
+
+FROM node:alpine
+
+VOLUME /data
+
+ENV CONFIG_PATH=/data/config.yaml \
+    REGISTRATION_PATH=/data/steam-registration.yaml
+
+# su-exec is used by docker-run.sh to drop privileges
+RUN apk add --no-cache su-exec
+
+WORKDIR /opt/mx-puppet-steam
+COPY docker-run.sh ./
+COPY --from=builder /opt/mx-puppet-steam/node_modules/ ./node_modules/
+COPY --from=builder /opt/mx-puppet-steam/build/ ./build/
+
+# change workdir to /data so relative paths in the config.yaml
+# point to the persisten volume
+WORKDIR /data
+ENTRYPOINT ["/opt/mx-puppet-steam/docker-run.sh"]