RELEASE bake var to filter out unsupported distros

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

docker-bake.hcl

@@ -12,8 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-variable "DISTROS" {
-  description = "List of supported distros. Don't forget to update _distro-* target if you add/remove a distro."
+variable "RELEASE" {
+  description = "Set to true to enable release mode. In release mode, some distros are not built."
+  default = false
+}
+
+variable "ALL_DISTROS" {
+  description = "List of all supported distros. Don't forget to update _distro-* target if you add/remove a distro."
   default = [
     "static",
 
@@ -42,6 +47,18 @@ variable "DISTROS" {
   ]
 }
 
+variable "DISTROS" {
+  description = "List of distros used by packages."
+  default = RELEASE ? setsubtract(ALL_DISTROS, [
+    "almalinux8",
+    "almalinux9",
+    "oraclelinux8",
+    "oraclelinux9",
+    "rockylinux8",
+    "rockylinux9"
+  ]) : ALL_DISTROS
+}
+
 variable "PKGS" {
   description = "List of packages to build from ./pkg directory. Don't forget to update _pkg-* target if you add/remove a package."
   default = [
@@ -459,6 +476,19 @@ function "distroSecrets" {
   result = length(regexall("^rhel", distro)) > 0 ? ["type=env,id=RH_USER,env=RH_USER", "type=env,id=RH_PASS,env=RH_PASS"] : []
 }
 
+target "_deploy-distros" {
+  args = {
+    DISTROS = join(",", setsubtract(DISTROS, [
+      "almalinux8",
+      "almalinux9",
+      "oraclelinux8",
+      "oraclelinux9",
+      "rockylinux8",
+      "rockylinux9"
+    ]))
+  }
+}
+
 #
 # pkgs configurations
 #