updated docker file

Author: sandeepgupta12

.github/scripts/ppc64le/self-hosted-builder/actions-runner.Dockerfile

@@ -4,12 +4,14 @@ FROM ubuntu:22.04
 # Set non-interactive mode for apt
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Fix sources for ppc64le and update system
+# Fix sources to point to ports.ubuntu.com for ppc64le
 RUN echo "deb [arch=ppc64el] http://ports.ubuntu.com/ubuntu-ports jammy main restricted universe multiverse" > /etc/apt/sources.list && \
     echo "deb [arch=ppc64el] http://ports.ubuntu.com/ubuntu-ports jammy-updates main restricted universe multiverse" >> /etc/apt/sources.list && \
     echo "deb [arch=ppc64el] http://ports.ubuntu.com/ubuntu-ports jammy-backports main restricted universe multiverse" >> /etc/apt/sources.list && \
-    echo "deb [arch=ppc64el] http://ports.ubuntu.com/ubuntu-ports jammy-security main restricted universe multiverse" >> /etc/apt/sources.list & \
-    apt-get clean && \
+    echo "deb [arch=ppc64el] http://ports.ubuntu.com/ubuntu-ports jammy-security main restricted universe multiverse" >> /etc/apt/sources.list
+
+# Fix sources for ppc64le and update system
+RUN apt-get clean && \
     apt-get update -o Acquire::Retries=5 -o Acquire::http::Timeout="10" && \
     apt-get -y install --no-install-recommends \
     build-essential \