build(docker): add debugging output for apt-get update failure

Author: davidagustin

Dockerfile

@@ -43,9 +43,17 @@ RUN echo "deb [signed-by=/usr/share/keyrings/postgresql-keyring.gpg] https://apt
   cat /etc/apt/sources.list.d/pgdg.list
 
 # Update package lists and install postgresql-client-common
+# Capture error output for debugging
 RUN apt-get clean && \
   rm -rf /var/lib/apt/lists/* && \
-  apt-get update --allow-releaseinfo-change && \
+  apt-get update --allow-releaseinfo-change 2>&1 | tee /tmp/apt-update.log || \
+  (echo "=== apt-get update failed ===" && \
+   cat /tmp/apt-update.log && \
+   echo "=== Checking repository config ===" && \
+   cat /etc/apt/sources.list.d/pgdg.list && \
+   echo "=== Checking keyring file ===" && \
+   ls -la /usr/share/keyrings/postgresql-keyring.gpg && \
+   exit 1) && \
   apt-get install -y postgresql-client-common && \
   rm -rf /var/lib/apt/lists/*