refactor: awscli -> s5cmd, add alpine 323

builder/Dockerfile.centos-7

@@ -45,9 +45,9 @@ RUN yum -y update \
     zlib-devel \
     && yum clean all
 
-# Install AWS CLI.
-RUN pip3 install awscli --upgrade --user && \
-    ln -s /root/.local/bin/aws /usr/bin/aws
+# Install s5cmd for S3 uploads (much faster than AWS CLI)
+RUN ARCH=$(uname -m); if [ "$ARCH" = "x86_64" ]; then S5CMD_ARCH="64bit"; else S5CMD_ARCH="arm64"; fi && \
+    curl -sL "https://github.com/peak/s5cmd/releases/download/v2.3.0/s5cmd_2.3.0_Linux-${S5CMD_ARCH}.tar.gz" | tar xz -C /usr/local/bin s5cmd
 
 RUN if [ "$(arch)" == "aarch64" ]; then echo arm64; else echo amd64; fi > /tmp/arch