Initial commit: Brevet card LaTeX sources

Add LaTeX templates for 200km brevet cards with front and back
sides. Includes Docker-based build system and documentation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,85 @@
+# Makefile for building Brevet card PDF in Docker
+
+IMAGE_NAME := brevetcard-builder
+CONTAINER_NAME := brevetcard-build
+TEX_FILE_FRONT := brevetkarte.tex
+TEX_FILE_BACK := brevetkarte-rueckseite.tex
+PDF_FILE_FRONT := brevetkarte.pdf
+PDF_FILE_BACK := brevetkarte-rueckseite.pdf
+
+.PHONY: all build clean build-image build-pdf build-front build-back run shell help
+
+# Default target
+all: build
+
+# Build both PDFs (builds image if needed, then compiles)
+build: build-image build-front build-back
+
+# Build Docker image
+build-image:
+	@echo "Building Docker image..."
+	docker build -t $(IMAGE_NAME) .
+
+# Compile both PDFs in Docker container
+build-pdf: build-front build-back
+
+# Compile front side PDF
+build-front:
+	@echo "Compiling front side LaTeX to PDF..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdflatex -interaction=nonstopmode $(TEX_FILE_FRONT)
+	@echo "PDF generated: $(PDF_FILE_FRONT)"
+
+# Compile back side PDF
+build-back:
+	@echo "Compiling back side LaTeX to PDF..."
+	docker run --rm \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		pdflatex -interaction=nonstopmode $(TEX_FILE_BACK)
+	@echo "PDF generated: $(PDF_FILE_BACK)"
+
+# Run container interactively
+run:
+	docker run --rm -it \
+		-v $(PWD):/workspace \
+		$(IMAGE_NAME) \
+		/bin/bash
+
+# Open shell in container for debugging
+shell:
+	docker run --rm -it \
+		-v $(PWD):/workspace \
+		--entrypoint /bin/bash \
+		$(IMAGE_NAME)
+
+# Clean generated files
+clean:
+	@echo "Cleaning generated files..."
+	rm -f *.aux *.log *.out *.toc *.pdf
+
+# Clean everything including Docker image
+clean-all: clean
+	@echo "Removing Docker image..."
+	docker rmi $(IMAGE_NAME) 2>/dev/null || true
+
+# Rebuild from scratch
+rebuild: clean-all build
+
+# Show help
+help:
+	@echo "Brevet Card PDF Builder"
+	@echo ""
+	@echo "Available targets:"
+	@echo "  make build       - Build Docker image and compile both PDFs (default)"
+	@echo "  make build-image - Build Docker image only"
+	@echo "  make build-pdf   - Compile both front and back PDFs"
+	@echo "  make build-front - Compile front side PDF only"
+	@echo "  make build-back  - Compile back side PDF only"
+	@echo "  make shell       - Open interactive shell in container"
+	@echo "  make clean       - Remove generated files (aux, log, pdf)"
+	@echo "  make clean-all   - Remove all files and Docker image"
+	@echo "  make rebuild     - Clean everything and rebuild"
+	@echo "  make help        - Show this help message"