[WIP] testing CI

Author: infinity0

ci/docker/aarch64-unknown-linux-gnu/Dockerfile

@@ -3,7 +3,12 @@ RUN dpkg --add-architecture arm64 && \
     sed -e "\,security.ubuntu.com/ubuntu,p;s,security.ubuntu.com/ubuntu,ports.ubuntu.com/ubuntu-ports,g" \
         -e "\,archive.ubuntu.com/ubuntu,p;s,archive.ubuntu.com/ubuntu,ports.ubuntu.com/ubuntu-ports,g" \
         -i /etc/apt/sources.list && \
-    apt-get update; \
+    sed -e "\,security.ubuntu.com/ubuntu,s.^deb .deb [ arch=amd64,i386 ] .g" \
+        -e "\,archive.ubuntu.com/ubuntu,s.^deb .deb [ arch=amd64,i386 ] .g" \
+        -e "\,ports.ubuntu.com/ubuntu-ports,s.^deb .deb [ arch=arm64,armhf,ppc64el,s390x ] .g" \
+        -i /etc/apt/sources.list && \
+    cat /etc/apt/sources.list && \
+    apt-get update && \
     apt-get install -y --no-install-recommends \
     gcc libc6-dev ca-certificates \
     gcc-aarch64-linux-gnu libc6-dev-arm64-cross \