refactor: rename func docker_compose_supports_cache_from for use in both cache_from and cache_to

Author: tomowatt

lib/shared.bash

@@ -134,7 +134,7 @@ function build_image_override_file() {
 }
 
 # Checks that a specific version of docker-compose supports cache_from
-function docker_compose_supports_cache_from() {
+function docker_compose_supports_cache() {
   local version="$1"
   if [[ "$version" == 1* || "$version" =~ ^(2|3)(\.[01])?$ ]] ; then
     return 1
@@ -216,7 +216,7 @@ function build_image_override_file_with_version() {
     fi
 
     if [[ "$cache_from_amt" -gt 0 ]] ; then
-      if ! docker_compose_supports_cache_from "$version" ; then
+      if ! docker_compose_supports_cache "$version" ; then
         echo "Unsupported Docker Compose config file version: $version"
         echo "The 'cache_from' option can only be used with Compose file versions 2.2 or 3.2 and above."
         echo "For more information on Docker Compose configuration file versions, see:"