Improve curl with retry on error

Improve curl with retry on error

Signed-off-by: Bensuperpc <bensuperpc@gmail.com>

imagefiles/build-and-install-curl.sh

@@ -29,7 +29,13 @@ function build_curl {
     local curl_sha256=$2
     check_var ${curl_sha256}
     check_var ${CURL_DOWNLOAD_URL}
-    curl -fsSLO ${CURL_DOWNLOAD_URL}/${curl_fname}.tar.gz
+    curl --connect-timeout 30 \
+        --max-time 10 \
+        --retry 5 \
+        --retry-delay 10 \
+        --retry-max-time 30 \
+        -fsSLO ${CURL_DOWNLOAD_URL}/${curl_fname}.tar.gz
+
     check_sha256sum ${curl_fname}.tar.gz ${curl_sha256}
     tar -zxf ${curl_fname}.tar.gz
     (cd curl-*/ && do_curl_build)