chore(oci): minimal dockerimage setup

Dockerfile

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+FROM golang:1.25.5-alpine3.23@sha256:6cc2338c038bc20f96ab32848da2b5c0641bb9bb5363f2c33e9b7c8838f9a208 AS build
+
+WORKDIR /app
+
+# Retrieve dependencies. Making this a separated step makes
+# Docker be able to reuse cached dependencies
+COPY go.* ./
+RUN go mod download
+
+# Copy local code
+COPY . ./
+
+# Build the binary
+RUN go build -v -o depgraph
+
+# Use standard alpine to run the application to
+# have a lean production container
+FROM debian:trixie-slim@sha256:4bcb9db66237237d03b55b969271728dd3d955eaaa254b9db8a3db94550b1885
+RUN set -x && apt-get update && DEBIAN_FRONTEND=nointeractive apt-get install -y \
+	ca-certificates && \
+	rm -rf /var/lib/apt/lists/*
+
+# Copy binary from build step to production image
+COPY --from=build /app/depgraph /app/depgraph
+
+# Run the application
+CMD ["/app/depgraph"]