Streamline runit build for amd64 and arm64

`package/check` (part of `package/install`) fails on qemu emulated arm64
build without the hacks we made in [1]. However, this hack will break
native arm64 build [2]. This change workaround this issue by calling
`pacpackage/compile` as the runit binaries are important to us and
copied in the next stage.

[1] https://github.com/projectcalico/node/pull/1044/files#diff-02ae637382f3cca949bd439c8b796acdb08abfbbe4b712eafae1bb80dd08f866R99
[2] #8285

Author: hjiawei

node/Dockerfile.amd64

@@ -75,11 +75,9 @@ RUN rpm -i ${IPSET_SOURCERPM_URL} && \
 
 # runit is not available in ubi or CentOS repos so build it.
 # get it from the debian repos as the official website doesn't support https
-RUN wget -P /tmp https://ftp.debian.org/debian/pool/main/r/runit/runit_${RUNIT_VER}.orig.tar.gz && \
-    gunzip /tmp/runit_${RUNIT_VER}.orig.tar.gz && \
-    tar -xpf /tmp/runit_${RUNIT_VER}.orig.tar -C /tmp && \
-    cd /tmp/admin/runit-${RUNIT_VER}/ && \
-    package/install
+RUN curl -sfL https://ftp.debian.org/debian/pool/main/r/runit/runit_${RUNIT_VER}.orig.tar.gz | tar xz -C /root && \
+    cd /root/admin/runit-${RUNIT_VER} && \
+    package/compile
 
 FROM ${UBI_IMAGE} as ubi
 
@@ -93,7 +91,7 @@ ARG RUNIT_VER
 RUN microdnf upgrade
 
 # Copy in runit binaries
-COPY --from=centos  /tmp/admin/runit-${RUNIT_VER}/command/* /usr/local/bin/
+COPY --from=centos  /root/admin/runit-${RUNIT_VER}/command/* /usr/local/bin/
 
 # Copy in our rpms
 COPY --from=centos  /root/rpmbuild/RPMS/x86_64/* /tmp/rpms/

node/Dockerfile.arm64

@@ -81,11 +81,9 @@ RUN rpm -i ${IPSET_SOURCERPM_URL} && \
 
 # runit is not available in ubi or CentOS repos so build it.
 # get it from the debian repos as the official website doesn't support https
-RUN wget -P /tmp https://ftp.debian.org/debian/pool/main/r/runit/runit_${RUNIT_VER}.orig.tar.gz && \
-    gunzip /tmp/runit_${RUNIT_VER}.orig.tar.gz && \
-    tar -xpf /tmp/runit_${RUNIT_VER}.orig.tar -C /tmp && \
-    cd /tmp/admin/runit-${RUNIT_VER}/ && \
-    package/install
+RUN curl -sfL https://ftp.debian.org/debian/pool/main/r/runit/runit_${RUNIT_VER}.orig.tar.gz | tar xz -C /root && \
+    cd /root/admin/runit-${RUNIT_VER} && \
+    package/compile
 
 FROM ${UBI_IMAGE} as ubi
 
@@ -103,7 +101,7 @@ COPY --from=qemu /usr/bin/qemu-aarch64-static /usr/bin/qemu-aarch64-static
 RUN microdnf upgrade
 
 # Copy in runit binaries
-COPY --from=centos  /tmp/admin/runit-${RUNIT_VER}/command/* /usr/local/bin/
+COPY --from=centos  /root/admin/runit-${RUNIT_VER}/command/* /usr/local/bin/
 
 # Copy in our rpms
 COPY --from=centos  /root/rpmbuild/RPMS/aarch64/* /tmp/rpms/