Update Dockerfile

Dockerfile

@@ -1,10 +1,6 @@
 # Use a suitable base Docker image with necessary dependencies
 FROM circulartextapp/spaceread
 
-RUN adduser --uid 1000 --disabled-password --gecos '' appuser
-USER 1000
-
-
 # Set the working directory to /app
 WORKDIR /app
 
@@ -15,9 +11,19 @@ COPY . /app
 ARG USER_ID=1000
 ENV USER_ID=$USER_ID
 
+# Check if the user already exists
+RUN if [ -z "$USER_ID" ]; then \
+      echo "User ID not provided. Using the default user ID 1000."; \
+      USER_ID=1000; \
+    fi && \
+    if id "$USER_ID" >/dev/null 2>&1; then \
+      echo "User with ID $USER_ID already exists."; \
+    else \
+      adduser --uid "$USER_ID" --disabled-password --gecos '' appuser; \
+    fi
 
 # Set appropriate permissions for the application directory
-RUN chown -R user:user /app && chmod -R 755 /app
+RUN chown -R appuser:appuser /app && chmod -R 755 /app
 
 # Install gosu (adjust the package manager based on your base image)
 RUN apt-get update && apt-get install -y gosu && rm -rf /var/lib/apt/lists/*
@@ -27,7 +33,7 @@ COPY entrypoint.sh /usr/local/bin/entrypoint.sh
 RUN chmod +x /usr/local/bin/entrypoint.sh
 
 # Switch to the user for improved security
-USER user
+USER appuser
 
 # Define the entrypoint script to handle user creation and application startup
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]