Linux-compatible CocoaHeadsCore, working Docker build, remove deploy workflow

.dockerignore

@@ -0,0 +1,10 @@
+# Build context for backend/Dockerfile is the repo root (the backend's
+# Package.swift references the local ../CocoaHeadsCore package).
+# Exclude everything except what the image build needs.
+*
+!backend
+!CocoaHeadsCore
+backend/.build/
+backend/.swiftpm/
+CocoaHeadsCore/.build/
+CocoaHeadsCore/.swiftpm/

CocoaHeadsCore/Sources/CocoaHeadsCore/ServerDrivenUI/EventDetail/EventDetailUI.swift

@@ -5,12 +5,12 @@
 //  Created by Mauricio on 5/7/25.
 //
 
-import SwiftUI
+import Foundation
 
 // TODO: .largeLink(URL) -> LPLinkPresentation
 
 public indirect enum EventDetailUI: Codable, Sendable {
-  case card(title: String?, edges: Edge.Set, insetBy: CGFloat?, ui: [EventDetailUI])
+  case card(title: String?, edges: ServerEdge.Set, insetBy: CGFloat?, ui: [EventDetailUI])
   case carousel(ui: [EventDetailUI])
   // TODO: Action -> openURL instead of direct URL
   case callToAction(title: String, url: URL, systemImage: String?)

CocoaHeadsCore/Sources/CocoaHeadsCore/ServerDrivenUI/EventDetail/Edge+Codable.swift → CocoaHeadsCore/Sources/CocoaHeadsCore/ServerDrivenUI/EventDetail/ServerEdge+Codable.swift

@@ -1,22 +1,18 @@
 //
-//  Edge+Codable.swift
-//  CocoaHeadsKit
+//  ServerEdge+Codable.swift
+//  CocoaHeadsCore
 //
 //  Created by Mauricio on 5/7/25.
 //
 
-import SwiftUI
-
-// TODO: Move this to `Common`
-
-extension Edge.Set: @retroactive Codable {
+extension ServerEdge.Set: Codable {
   private enum CodingKeys: String, CodingKey {
     case top, leading, bottom, trailing, all, horizontal, vertical
   }
 
   public init(from decoder: Decoder) throws {
     let container = try decoder.container(keyedBy: CodingKeys.self)
-    var edges: Edge.Set = []
+    var edges: ServerEdge.Set = []
 
     if try container.decodeIfPresent(Bool.self, forKey: .top) == true {
       edges.insert(.top)

CocoaHeadsCore/Sources/CocoaHeadsCore/ServerDrivenUI/EventDetail/ServerEdge.swift

@@ -0,0 +1,33 @@
+//
+//  ServerEdge.swift
+//  CocoaHeadsCore
+//
+//  Created by Mauricio on 8/4/26.
+//
+
+// Platform-neutral mirror of SwiftUI.Edge, so server-driven UI models
+// compile on Linux and stay free of SwiftUI. Raw values match SwiftUI's,
+// making the bridge to SwiftUI.Edge.Set a plain rawValue conversion.
+public enum ServerEdge: Int8, CaseIterable, Sendable {
+  case top, leading, bottom, trailing
+
+  public struct Set: OptionSet, Sendable {
+    public let rawValue: Int8
+
+    public init(rawValue: Int8) {
+      self.rawValue = rawValue
+    }
+
+    public init(_ e: ServerEdge) {
+      self.init(rawValue: 1 << e.rawValue)
+    }
+
+    public static let top = Set(.top)
+    public static let leading = Set(.leading)
+    public static let bottom = Set(.bottom)
+    public static let trailing = Set(.trailing)
+    public static let horizontal: Set = [.leading, .trailing]
+    public static let vertical: Set = [.top, .bottom]
+    public static let all: Set = [.top, .leading, .bottom, .trailing]
+  }
+}

CocoaHeadsKit/Sources/CocoaHeadsKit/Events/EventDetailRenderer.swift

@@ -24,7 +24,7 @@ public struct EventDetailRenderer: View {
   private func render(ui: EventDetailUI) -> some View {
     switch ui {
     case .card(title: let title, edges: let edges, insetBy: let insets, ui: let innerUI):
-      Card(title: title, contentInset: (edges, insets)) {
+      Card(title: title, contentInset: (edges.swiftUI, insets)) {
         EventDetailRenderer(ui: innerUI)
       }
     case .carousel(ui: let innerUI):

CocoaHeadsKit/Sources/CocoaHeadsKit/Events/ServerEdge+SwiftUI.swift

@@ -0,0 +1,28 @@
+//
+//  ServerEdge+SwiftUI.swift
+//  CocoaHeadsKit
+//
+//  Created by Mauricio on 8/4/26.
+//
+
+import CocoaHeadsCore
+import SwiftUI
+
+extension ServerEdge.Set {
+  /// SwiftUI counterpart of this edge set, for use in view modifiers.
+  public var swiftUI: SwiftUI.Edge.Set {
+    .init(rawValue: rawValue)
+  }
+}
+
+extension ServerEdge {
+  /// SwiftUI counterpart of this edge.
+  public var swiftUI: SwiftUI.Edge {
+    switch self {
+    case .top: .top
+    case .leading: .leading
+    case .bottom: .bottom
+    case .trailing: .trailing
+    }
+  }
+}

backend/Dockerfile

@@ -16,12 +16,15 @@ WORKDIR /build
 # This creates a cached layer that can be reused
 # as long as your Package.swift/Package.resolved
 # files do not change.
-COPY ./Package.* ./
+# CocoaHeadsCore is a local package referenced as ../CocoaHeadsCore,
+# so it must sit next to /build inside the container.
+COPY CocoaHeadsCore /CocoaHeadsCore
+COPY backend/Package.* ./
 RUN swift package resolve \
         $([ -f ./Package.resolved ] && echo "--force-resolved-versions" || true)
 
-# Copy entire repo into container
-COPY . .
+# Copy backend sources into container
+COPY backend/ ./
 
 RUN mkdir /staging
 

backend/docker-compose.yml

@@ -29,7 +29,8 @@ services:
   app:
     image: backend:latest
     build:
-      context: .
+      context: ..
+      dockerfile: backend/Dockerfile
     environment:
       <<: *shared_environment
     depends_on:
@@ -41,7 +42,8 @@ services:
   migrate:
     image: backend:latest
     build:
-      context: .
+      context: ..
+      dockerfile: backend/Dockerfile
     environment:
       <<: *shared_environment
     depends_on:
@@ -52,7 +54,8 @@ services:
   revert:
     image: backend:latest
     build:
-      context: .
+      context: ..
+      dockerfile: backend/Dockerfile
     environment:
       <<: *shared_environment
     depends_on: