Add Dockerfile

Dockerfile

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+FROM golang:1.22 AS build
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 go build -o /p .
+
+FROM scratch
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /p /p
+COPY static /static
+ENTRYPOINT ["/p"]