added docs and container (podman + docker) setup

assets/Containerfile

@@ -0,0 +1,50 @@
+# OCI-compliant multi-stage build for Podman
+# Handles SELinux contexts and rootless operation
+
+FROM docker.io/library/golang:1.23-alpine AS builder
+
+RUN apk add --no-cache git ca-certificates tzdata
+
+WORKDIR /build
+
+COPY go.mod go.sum* ./
+RUN go mod download
+
+COPY . .
+
+# Build static binary with no CGO
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+  -ldflags='-w -s -extldflags "-static"' \
+  -a -installsuffix cgo \
+  -o argparse-builder \
+  .
+
+# Minimal runtime with proper labels
+FROM scratch
+
+LABEL maintainer="your-email@example.com" \
+  org.opencontainers.image.title="Argparse Builder" \
+  org.opencontainers.image.description="Interactive bash argument parser generator" \
+  org.opencontainers.image.version="1.0.0" \
+  org.opencontainers.image.authors="pynezz" \
+  org.opencontainers.image.url="https://git.pynezz.dev/pynezz/argparser" \
+  org.opencontainers.image.source="https://git.pynezz.dev/pynezz/argparser"
+
+# Copy certificates and timezone data
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+
+# Copy binary
+COPY --from=builder /build/argparse-builder /argparse-builder
+
+# Expose port
+EXPOSE 8080
+
+# Run as nobody user
+USER 65534:65534
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD ["/argparse-builder", "health"] || exit 1
+
+ENTRYPOINT ["/argparse-builder"]