Refactor Dockerfile to use apt-get for installing PostgreSQL dependencies and improve build process

Dockerfile

@@ -1,9 +1,21 @@
 FROM freeradius/freeradius-server:latest
 
-RUN apk add postgresql-dev build-base \
+# Install dependencies for building PostgreSQL module
- && cd /tmp \
+RUN apt-get update && \
- && git clone --depth 1 https://github.com/FreeRADIUS/freeradius-server.git \
+    apt-get install -y \
- && cd freeradius-server \
+    git \
- && ./configure --with-rlm-sql-postgresql \
+    build-essential \
- && make \
+    libpq-dev \
- && make install
+    pkg-config \
+    autoconf \
+    automake \
+    libtool && \
+    rm -rf /var/lib/apt/lists/*
+
+# Build FreeRADIUS with PostgreSQL support
+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