Feat: Backend scaffolding and local dev stack

Backend/docker-bake.hcl

@@ -0,0 +1,36 @@
+variable "REGISTRY" {
+  default = "registry.example.com"
+}
+
+variable "TAG" {
+  default = "latest"
+}
+
+target "_app" {
+  context    = "."
+  dockerfile = "Dockerfile"
+}
+
+target "dev" {
+  inherits = ["_app"]
+  target   = "development"
+  tags     = ["moku/work-backend:dev"]
+}
+
+target "dev-image" {
+  inherits = ["_app"]
+  target   = "development"
+  tags     = ["${REGISTRY}/moku/work-backend:dev-${TAG}"]
+}
+
+group "local" {
+  targets = ["dev"]
+}
+
+group "registry" {
+  targets = ["dev-image"]
+}
+
+group "default" {
+  targets = ["dev"]
+}