Chore(deployment): add Dockerfile

Author: till

.dockerignore

@@ -0,0 +1,2 @@
+.envrc
+.github

Dockerfile

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+FROM golang:1.23 AS build
+
+WORKDIR /build
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . ./
+RUN go build ./cmd/...
+
+FROM debian:bookworm-slim
+
+RUN DEBIAN_FRONTEND=noninteractive apt update \
+    && apt install -y ca-certificates
+
+USER 65534:65534
+
+COPY --from=build --chown=65534:65534 /build/bot /usr/bin/bot
+
+ENTRYPOINT [ "/usr/bin/bot" ]