datadog: take only first path from php-config --ini-dir

It returns two paths separated by colon - /opt/bref/etc/php/conf.d:/var/task/php/conf.d

Author: mu1f407

layers/datadog/Dockerfile

@@ -15,7 +15,7 @@ RUN php datadog-setup.php --php-bin=all --enable-profiling
 
 RUN cp "$(php-config --extension-dir)/ddtrace.so" /tmp/ddtrace.so && \
     cp "$(php-config --extension-dir)/datadog-profiling.so" /tmp/datadog-profiling.so && \
-    cp "$(php-config --ini-dir)/98-ddtrace.ini" /tmp/ext.ini
+    cp "$(php-config --ini-dir | cut -d: -f1)/98-ddtrace.ini" /tmp/ext.ini
 
 RUN sed -i 's/extension = ddtrace\.so/extension = \/opt\/bref-extra\/ddtrace.so/' /tmp/ext.ini && \
     sed -i 's/extension = datadog-profiling\.so/extension = \/opt\/bref-extra\/datadog-profiling.so/' /tmp/ext.ini && \