updated docker

Dockerfile

@@ -1,42 +1,40 @@
-# Use the official Python 3.10 slim image
 FROM python:3.10-slim
 
-# Set the working directory inside the container
+# Set working directory inside the container
 WORKDIR /app
 
 # Install system dependencies
-# - git (optional, useful if pip dependencies are installed via git)
-# - default-jre is required for language_tool_python
-RUN apt-get update && apt-get install -y \
-    git \
-    default-jre \
- && rm -rf /var/lib/apt/lists/*
-
-# Set environment variables
-# - HF_HOME: used by Hugging Face models
-# - LANGUAGE_TOOL_DOWNLOAD_DIR: used by language_tool_python
-# - HOME: so that ~/.cache resolves to a writable folder
-ENV HF_HOME=/cache
-ENV LANGUAGE_TOOL_DOWNLOAD_DIR=/cache
-ENV HOME=/app
-
-# Create and set permissions for cache directory
-RUN mkdir -p /cache && chmod -R 777 /cache
+# git is included for any potential future needs or if any dependency requires it for cloning
+# Install Java Runtime Environment (JRE) - crucial for language-tool-python
+RUN apt-get update && apt-get install -y git default-jre && rm -rf /var/lib/apt/lists/*
 
-# Copy Python dependency file
+# Install Python dependencies from requirements.txt
+# Ensure requirements.txt is copied before installing to leverage Docker cache
 COPY requirements.txt .
-
-# Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Download spaCy English model
+# Download the spaCy English language model
+# This is crucial for resolving the "[E050] Can't find model 'en_core_web_sm'" error
 RUN python -m spacy download en_core_web_sm
 
-# Copy application code into the container
-COPY app ./app
+# Setup Hugging Face cache directory and permissions
+# This directory will also be used by language-tool-python for its main downloads.
+ENV HF_HOME=/cache
+RUN mkdir -p /cache && chmod -R 777 /cache
+
+# Explicitly create and set permissions for /.cache
+# This is to address PermissionError: [Errno 13] Permission denied: '/.cache'
+# which language-tool-python might be trying to write to.
+RUN mkdir -p /.cache && chmod -R 777 /.cache
 
-# Expose the port (optional)
-EXPOSE 7860
+# Set environment variable for language-tool-python download directory
+# This redirects LanguageTool's primary downloads to the shared /cache directory.
+ENV LANGUAGE_TOOL_DOWNLOAD_DIR=/cache
+
+# Copy the entire application code into the container
+# This copies your 'app' directory, including main.py, routers, models, etc.
+COPY app ./app
 
-# Run the app using Uvicorn
+# Command to run the FastAPI application using Uvicorn
+# Binds the app to all network interfaces (0.0.0.0) on port 7860
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]