add Dockerfile

.dockerignore

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+.git
+node_modules

Dockerfile

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+# syntax=docker/dockerfile:1.6
+# ^ needed for ADD --checksum=…
+
+FROM node:20-alpine as builder
+WORKDIR /app
+
+# install dependencies
+# There are some (transitive) dependencies that need a C++ compiler, so we build them in a separate stage.
+RUN apk add --update \
+	g++ \
+	make \
+	python3
+ADD package.json /app
+RUN npm install --production
+
+# ---
+
+FROM node:20-alpine
+WORKDIR /app
+
+LABEL org.opencontainers.image.title="vdv-453-nats-adapter"
+LABEL org.opencontainers.image.description="An HTTP API for Berlin & Brandenburg public transport."
+LABEL org.opencontainers.image.authors="Jannis R <[email protected]>"
+LABEL org.opencontainers.image.documentation="https://github.com/derhuerst/vbb-rest/tree/7"
+
+# install dependencies
+COPY --from=builder /app/node_modules ./node_modules
+
+# add source code
+ADD . /app
+
+# CLI some test
+RUN ./cli.js --help >/dev/null
+
+ENTRYPOINT [ "./cli.js"]