add Dockerfile

Dockerfile

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+FROM golang:alpine AS build-env
+
+RUN apk --no-cache add git make build-base
+
+RUN git clone --depth 1 https://git.sirrow.work/sirrow/tweetdistributor.git
+WORKDIR tweetdistributor
+
+RUN mkdir -p /build
+RUN go mod tidy
+RUN go build -a -tags "netgo" -tags timetzdata -installsuffix netgo -ldflags="-s -w -extldflags \"-static\"" -o=/build/tweetdistributor main.go
+
+FROM alpine:3.22
+
+RUN apk --no-cache add ca-certificates
+COPY --from=build-env /build/tweetdistributor /tweetdistributor
+RUN chmod u+x /tweetdistributor
+
+CMD ["/tweetdistributor"]