Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
-# Use the base image with necessary dependencies
-FROM circulartextapp/spaceread
+# Use the base Docker image with necessary dependencies
+FROM circulartextapp/spaceread as base
 
 # Set the working directory to /app
 WORKDIR /app
@@ -7,12 +7,42 @@ WORKDIR /app
 # Copy the current directory contents into the container at /app
 COPY . /app
 
+# Define the user ID in the environment variable USER_ID with a default value
+ARG USER_ID=1000
+ENV USER_ID=$USER_ID
+
+# Check if the user already exists
+RUN if id "$USER_ID" >/dev/null 2>&1; then \
+      echo "User with ID $USER_ID already exists."; \
+    else \
+      useradd -m -u "$USER_ID" user; \
+    fi
+
+# Set appropriate permissions for the application directory
+RUN chown -R user:user /app && chmod -R 755 /app
+
+# Switch to the user for improved security
+USER user
+
+# Intermediate image with additional packages
+FROM debian:bullseye-slim as packages
+
+# Install gosu using apt-get
+RUN apt-get update && apt-get install -y gosu && rm -rf /var/lib/apt/lists/*
+
+# Final image
+FROM base
+
+# Copy gosu from the packages image
+COPY --from=packages /usr/sbin/gosu /usr/sbin/gosu
+
 # Set the entrypoint script as executable
 COPY entrypoint.sh /usr/local/bin/entrypoint.sh
 RUN chmod +x /usr/local/bin/entrypoint.sh
 
-# Set the entrypoint script as the default entrypoint for the container
+# Define the entrypoint script to handle user creation and application startup
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
 
 # Default command to run if the user doesn't provide a command
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860", "--reload"]
+