Initial commit with basic HTTP endpoint working

Dockerfile

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+# This stage builds the mermaidcli executable.
+FROM node:12.12.0-buster as node
+
+WORKDIR /root
+
+# copy the mermaidcli node package into the container and install
+COPY ./mermaidcli/* .
+
+RUN npm install
+
+
+# This stage builds the go executable.
+FROM golang:1.13-buster as go
+
+WORKDIR /root
+COPY . .
+
+RUN go build -o bin/app cmd/app/main.go
+
+
+# Final stage that will be pushed.
+FROM debian:buster-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt update 2>/dev/null && \
+	apt install -y --no-install-recommends \
+		ca-certificates \
+		2>/dev/null
+
+COPY --from=node /root/node_modules/.bin/mmdc ./mermaidcli
+COPY --from=go /root/bin/app ./app
+
+# We should now have all the required dependencies to build the proto files.
+CMD ["./app", "--mermaid=./mermaidcli"]