chore: optimize docker-bake file

docker-bake.hcl

@@ -12,12 +12,18 @@ target "_common" {
   inherits = ["docker-metadata-action"]
   context = "."
   dockerfile = "Dockerfile"
+}
+
+target "_common_multi_platforms" {
   platforms = [
     "linux/amd64",
     "linux/arm64",
     "linux/arm/v6",
     "linux/arm/v7"
   ]
+}
+
+target "_common_tags" {
   tags = [
     "ttionya/vaultwarden-backup:latest",
     "ttionya/vaultwarden-backup:${VERSION}",
@@ -29,7 +35,7 @@ target "_common" {
 }
 
 target "image-stable" {
-  inherits = ["_common"]
+  inherits = ["_common", "_common_multi_platforms", "_common_tags"]
 }
 
 target "image-schedule" {
@@ -37,14 +43,14 @@ target "image-schedule" {
 }
 
 target "image-beta" {
-  inherits = ["_common"]
+  inherits = ["_common", "_common_multi_platforms"]
   tags = [
     "ttionya/vaultwarden-backup:${VERSION}"
   ]
 }
 
 target "image-test-base" {
-  inherits = ["_common"]
+  inherits = ["_common", "_common_multi_platforms"]
   tags = [
     "${TEST_BASE_TAG}"
   ]
@@ -53,9 +59,6 @@ target "image-test-base" {
 target "image-test" {
   inherits = ["_common"]
   dockerfile = "./tests/Dockerfile"
-  platforms = [
-    "linux/amd64"
-  ]
   contexts = {
     base = "docker-image://${TEST_BASE_TAG}"
   }