Initial commit

Dockerfile

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+FROM golang:latest AS builder
+
+WORKDIR /build
+
+# Copy shared module first
+COPY commons/ ./commons/
+
+# Copy publisher module
+COPY publisher/ ./publisher/
+
+# Build the binary
+WORKDIR /build/publisher
+RUN go mod download
+RUN CGO_ENABLED=0 go build -o publisher .
+
+# Runtime stage
+FROM ubuntu:latest
+
+WORKDIR /app
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y ca-certificates tzdata curl wget && rm -rf /var/lib/apt/lists/*
+
+# Copy binary from builder
+COPY --from=builder /build/publisher/publisher .
+
+EXPOSE 4322
+
+CMD ["./publisher"]