add docker file

.dockerignore

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+.git
+config.json
+logs
+certs
+cdn

Dockerfile

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+FROM node:14-alpine
+
+RUN apk add --no-cache python3 make gcc g++ 
+WORKDIR /app
+
+COPY "docker/entrypoint.sh" .
+
+COPY package*.json .
+RUN npm install
+
+COPY . .
+
+VOLUME [ "/app/config.json" ]
+
+CMD ["sh", "entrypoint.sh"]

docker/entrypoint.sh

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+#!/bin/sh
+
+files='config.json certs/nex/datastore/secret.key certs/nex/secret.key certs/nex/public.pem'
+
+for file in $files; do
+    if [ ! -f $file ]; then
+        echo "$PWD/$file file does not exist. Please mount and try again."
+        exit 1
+    fi
+done
+
+exec node src/server.js