Refactor Dockerfile comments for clarity and consistency

Dockerfile

@@ -1,6 +1,6 @@
 FROM freeradius/freeradius-server:latest
 
-# Install dependencies for building PostgreSQL module
+# Build dependencies
 RUN apt-get update && \
     apt-get install -y \
     git \
@@ -12,10 +12,16 @@ RUN apt-get update && \
     libtool && \
     rm -rf /var/lib/apt/lists/*
 
-# Build FreeRADIUS with PostgreSQL support
+# Build PostgreSQL module
 RUN cd /tmp && \
     git clone --depth 1 https://github.com/FreeRADIUS/freeradius-server.git && \
     cd freeradius-server && \
     ./configure --with-rlm-sql-postgresql && \
     make && \
     make install
+
+# Runtime: point FreeRADIUS to the compiled module directory
+RUN ln -s /usr/local/lib/freeradius /usr/lib/freeradius
+
+# Runtime: use the compiled config directory
+RUN rm -rf /etc/freeradius && ln -s /usr/local/etc/raddb /etc/freeradius