# Build stage
FROM golang:1.24-alpine AS builder

RUN apk add --no-cache git

WORKDIR /src

# Cache module downloads
COPY go.mod go.sum ./
RUN go mod download

# Copy source and build
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /kafka ./cmd/kafka

# Runtime stage
FROM alpine:3.21

RUN apk add --no-cache ca-certificates tzdata

COPY --from=builder /kafka /usr/local/bin/kafka
COPY config.example.toml /etc/kafka/config.example.toml

EXPOSE 8080

ENTRYPOINT ["kafka"]
CMD ["-config", "/etc/kafka/config.toml"]
