fix: create embeddings/log/datasets dirs; make kohya_ss clone resilient; keep embeddings dir flag

Dockerfile

@@ -25,11 +25,14 @@ RUN git clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git ${WEBU
 
 # Optional extensions
 # RUN git clone https://github.com/Mikubill/sd-webui-controlnet ${WEBUI_DIR}/extensions/sd-webui-controlnet
-RUN git clone https://github.com/bmaltais/kohya_ss ${WEBUI_DIR}/extensions/kohya_ss
+RUN git clone https://github.com/bmaltais/kohya_ss ${WEBUI_DIR}/extensions/kohya_ss || true
 
 # Create embeddings directory with correct permissions
 USER root
-RUN mkdir -p ${WEBUI_DIR}/embeddings && chown -R user:user ${WEBUI_DIR}/embeddings
+RUN mkdir -p ${WEBUI_DIR}/embeddings \
+    /app/log/ti \
+    /app/datasets \
+    && chown -R user:user /app
 USER user
 
 RUN pip install --no-cache-dir --upgrade pip wheel setuptools \