feat(docker): add Dockerfiles for Befunge interpreter and standalone execution

Author: Fenriir42

images/befunge/Dockerfile.base

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+FROM whanos-foundation
+
+# Install Python (for the Befunge interpreter)
+RUN nix-env -iA nixpkgs.python3
+
+# Add our Befunge-93 interpreter to PATH
+# Place it in $HOME/.local/bin which is already on PATH in the foundation image
+WORKDIR /home/nixuser
+# When building, set the build context to the repo root (.) so this path resolves
+COPY befunge/befunge93 /home/nixuser/.local/bin/befunge93
+# RUN chmod +x /home/nixuser/.local/bin/befunge93
+
+WORKDIR /app
+
+# Default command (can be overridden by custom Dockerfile)
+CMD ["/bin/bash"]

images/befunge/Dockerfile.standalone

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+FROM whanos-befunge AS builder
+
+# Use a consistent app working directory
+WORKDIR /app
+
+# Copy the Befunge program (expected: single app/main.bf)
+COPY app app
+
+# Validate required entry file exists during build
+RUN test -f app/main.bf
+
+FROM whanos-befunge
+WORKDIR /app
+COPY --from=builder /app /app
+
+# Run the interpreter against the provided program
+ENTRYPOINT ["befunge93"]
+CMD ["app/main.bf"]