creating docker

.dockerignore

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+node_modules
+.env

Dockerfile

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+FROM alpine:latest
+ARG NOTION_INTEGRATION_ID
+ARG NOTION_INTEGRATION_SECRET
+ARG PORT
+ARG NODE_ENV
+
+RUN apk add --update nodejs npm
+RUN npm install --global yarn
+
+COPY [".", "/usr/src"]
+WORKDIR "/usr/src"
+
+RUN yarn
+
+EXPOSE ${PORT}
+
+CMD if [ ${NODE_ENV} = "development" ] ; then yarn run dev ; else yarn run start PORT=${PORT}; fi

docker-compose.yml

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+version: "3.8"
+
+services:
+  backend:
+    build: .
+    ports:
+      - "${PORT}:${PORT}"
+    environment:
+      - NOTION_INTEGRATION_ID=${NOTION_INTEGRATION_ID}
+      - NOTION_INTEGRATION_SECRET=${NOTION_INTEGRATION_SECRET}
+      - PORT=${PORT}
+      - NODE_ENV=${NODE_ENV}