add readme and fix docker.sh

README.md

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+Convert-to-Quant (`ctq`) is installed for normal quantizations.
+`hf`, the Hugging Face CLI command, and llama.cpp's compiled binaries are also available.
+
+For GGUF quantizations, try:
+- `hf_to_nvfp4_quant` (huggingface structure to GGUF)
+- `gguf_to_nvfp4_quant` (GGUF to GGUF)
+- `safetensors_to_nvfp4_quant` (ComfyUI style safetensors to GGUF (untested))
+- `hf_to_nvfp4_safetensors` (huggingface structure to ComfyUI style safetensors)
+
+For model info, try:
+- `hf_info` (huggingface structure)
+- `gguf_info` (GGUF structure)
+---
+
+Example:
+
+```bash
+hf download coder3101/gemma-4-12B-it-heretic --local-dir gemma-4-12B-it-heretic
+hf_to_nvfp4_gguf -o gemma-4-12B-it-heretic_nvfp4 gemma-4-12B-it-heretic
+```
+
+This would create a NVFP4 GGUF for Ollama/llama.cpp from `https://huggingface.co/coder3101/gemma-4-12B-it-heretic`
+
+The same directory can be quantized to one ComfyUI NVFP4 safetensors file:
+
+`hf_to_nvfp4_safetensors -o gemma-4-12B-it-heretic-NVFP4.safetensors gemma-4-12B-it-heretic`
+
+Conversions between formats without quantization is available in the custom commands with `--no-quant`.