chore(pack-images): delete buildpacks url scheme

Author: lijianguo

buildpacks/php/bin/build

@@ -29,7 +29,7 @@ if [[ "${php_version}" == "${remote_php_version}" ]] ; then
   echo "---> Reusing php"
 else
   echo "---> Downloading and extracting php ${php_version} ${arch}"
-  php_url="https://buildpacks.drycc.cc/php/${CNB_STACK_ID}/php-${php_version}-${arch}.tar.gz"
+  php_url="buildpacks.drycc.cc/php/${CNB_STACK_ID}/php-${php_version}-${arch}.tar.gz"
   wget -q -O - "${php_url}" | tar -xzf - -C "${php_layer_dir}"
   rm -f "php-${php_version}-${arch}.tar.gz"
   cp "${php_layer_dir}/sbin/php-fpm" "${php_layer_dir}/bin"

buildpacks/python/bin/build

@@ -22,7 +22,7 @@ if [[ "${python_version}" == "${remote_python_version}" ]] ; then
   echo "---> Reusing python"
 else
   echo "---> Downloading and extracting Python ${python_version}"
-  python_url="https://buildpacks.drycc.cc/python/${CNB_STACK_ID}/python-${python_version}-${arch}.tar.gz"
+  python_url="buildpacks.drycc.cc/python/${CNB_STACK_ID}/python-${python_version}-${arch}.tar.gz"
   wget -q -O - "${python_url}" | tar -xzf - -C "${python_layer_dir}"
   cat > "${python_layer_dir}.toml" <<EOL
 cache = true

buildpacks/ruby/bin/build

@@ -24,7 +24,7 @@ if [[ "${ruby_version}" == "${remote_ruby_version}" ]] ; then
   echo "---> Reusing ruby"
 else
   echo "---> Downloading and extracting Ruby ${ruby_version}"
-  ruby_url="https://buildpacks.drycc.cc/ruby/${CNB_STACK_ID}/ruby-${ruby_version}-${arch}.tar.gz"
+  ruby_url="buildpacks.drycc.cc/ruby/${CNB_STACK_ID}/ruby-${ruby_version}-${arch}.tar.gz"
   wget -q -O - "${ruby_url}" | tar -xzf - -C "${ruby_layer_dir}"
   cat > "${ruby_layer_dir}.toml" <<EOL
 cache = true