From e79a3d9389d28ea3b334eabce72c513dc26f7297 Mon Sep 17 00:00:00 2001
From: Nathan Flurry <developer@nathanflurry.com>
Date: Thu, 12 Mar 2026 18:08:02 -0700
Subject: [PATCH] Add Railway Caddy frontend images

---
 foundry/docker/frontend-caddy-entrypoint.sh | 16 +++++++++++
 foundry/docker/frontend.Caddyfile           | 11 ++++++++
 foundry/docker/frontend.Dockerfile          | 30 +++++++++++++++++++++
 foundry/docker/frontend.mock.Dockerfile     | 30 +++++++++++++++++++++
 foundry/packages/frontend/index.html        |  1 +
 foundry/packages/frontend/src/lib/env.ts    | 23 +++++++++++++---
 6 files changed, 107 insertions(+), 4 deletions(-)
 create mode 100644 foundry/docker/frontend-caddy-entrypoint.sh
 create mode 100644 foundry/docker/frontend.Caddyfile
 create mode 100644 foundry/docker/frontend.Dockerfile
 create mode 100644 foundry/docker/frontend.mock.Dockerfile

diff --git a/foundry/docker/frontend-caddy-entrypoint.sh b/foundry/docker/frontend-caddy-entrypoint.sh
new file mode 100644
index 0000000..db98b94
--- /dev/null
+++ b/foundry/docker/frontend-caddy-entrypoint.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+set -eu
+
+escape_js() {
+  printf '%s' "${1:-}" | sed 's/\\/\\\\/g; s/"/\\"/g'
+}
+
+cat > /srv/__foundry_runtime_config.js <<EOF
+window.__FOUNDRY_RUNTIME_CONFIG__ = {
+  backendEndpoint: "$(escape_js "${VITE_HF_BACKEND_ENDPOINT:-}")",
+  defaultWorkspaceId: "$(escape_js "${VITE_HF_WORKSPACE:-}")",
+  frontendClientMode: "$(escape_js "${FOUNDRY_FRONTEND_CLIENT_MODE:-remote}")"
+};
+EOF
+
+exec caddy run --config /etc/caddy/Caddyfile --adapter caddyfile
diff --git a/foundry/docker/frontend.Caddyfile b/foundry/docker/frontend.Caddyfile
new file mode 100644
index 0000000..2722cf8
--- /dev/null
+++ b/foundry/docker/frontend.Caddyfile
@@ -0,0 +1,11 @@
+{
+  auto_https off
+}
+
+:{$PORT:80} {
+  root * /srv
+  encode gzip zstd
+  header /__foundry_runtime_config.js Cache-Control "no-store"
+  try_files {path} /index.html
+  file_server
+}
diff --git a/foundry/docker/frontend.Dockerfile b/foundry/docker/frontend.Dockerfile
new file mode 100644
index 0000000..ff1ffe6
--- /dev/null
+++ b/foundry/docker/frontend.Dockerfile
@@ -0,0 +1,30 @@
+# syntax=docker/dockerfile:1.7
+
+FROM node:22-bookworm-slim AS base
+ENV PNPM_HOME=/pnpm
+ENV PATH=$PNPM_HOME:$PATH
+WORKDIR /app
+RUN corepack enable && corepack prepare pnpm@9.15.0 --activate
+
+FROM base AS build
+COPY . .
+RUN pnpm install --frozen-lockfile
+RUN pnpm --filter @sandbox-agent/foundry-shared build
+RUN pnpm --filter acp-http-client build
+RUN pnpm --filter @sandbox-agent/cli-shared build
+RUN SKIP_OPENAPI_GEN=1 pnpm --filter sandbox-agent build
+RUN pnpm --filter @sandbox-agent/react build
+RUN pnpm --filter @sandbox-agent/foundry-client build
+RUN pnpm --filter @sandbox-agent/foundry-frontend-errors build
+ENV FOUNDRY_FRONTEND_CLIENT_MODE=remote
+RUN pnpm --filter @sandbox-agent/foundry-frontend build
+
+FROM caddy:2.10-alpine AS runtime
+COPY foundry/docker/frontend.Caddyfile /etc/caddy/Caddyfile
+COPY foundry/docker/frontend-caddy-entrypoint.sh /usr/local/bin/foundry-frontend-entrypoint
+COPY --from=build /app/foundry/packages/frontend/dist /srv
+RUN chmod +x /usr/local/bin/foundry-frontend-entrypoint
+ENV PORT=80
+ENV FOUNDRY_FRONTEND_CLIENT_MODE=remote
+EXPOSE 80
+ENTRYPOINT ["/usr/local/bin/foundry-frontend-entrypoint"]
diff --git a/foundry/docker/frontend.mock.Dockerfile b/foundry/docker/frontend.mock.Dockerfile
new file mode 100644
index 0000000..f93f269
--- /dev/null
+++ b/foundry/docker/frontend.mock.Dockerfile
@@ -0,0 +1,30 @@
+# syntax=docker/dockerfile:1.7
+
+FROM node:22-bookworm-slim AS base
+ENV PNPM_HOME=/pnpm
+ENV PATH=$PNPM_HOME:$PATH
+WORKDIR /app
+RUN corepack enable && corepack prepare pnpm@9.15.0 --activate
+
+FROM base AS build
+COPY . .
+RUN pnpm install --frozen-lockfile
+RUN pnpm --filter @sandbox-agent/foundry-shared build
+RUN pnpm --filter acp-http-client build
+RUN pnpm --filter @sandbox-agent/cli-shared build
+RUN SKIP_OPENAPI_GEN=1 pnpm --filter sandbox-agent build
+RUN pnpm --filter @sandbox-agent/react build
+RUN pnpm --filter @sandbox-agent/foundry-client build
+RUN pnpm --filter @sandbox-agent/foundry-frontend-errors build
+ENV FOUNDRY_FRONTEND_CLIENT_MODE=mock
+RUN pnpm --filter @sandbox-agent/foundry-frontend build
+
+FROM caddy:2.10-alpine AS runtime
+COPY foundry/docker/frontend.Caddyfile /etc/caddy/Caddyfile
+COPY foundry/docker/frontend-caddy-entrypoint.sh /usr/local/bin/foundry-frontend-entrypoint
+COPY --from=build /app/foundry/packages/frontend/dist /srv
+RUN chmod +x /usr/local/bin/foundry-frontend-entrypoint
+ENV PORT=80
+ENV FOUNDRY_FRONTEND_CLIENT_MODE=mock
+EXPOSE 80
+ENTRYPOINT ["/usr/local/bin/foundry-frontend-entrypoint"]
diff --git a/foundry/packages/frontend/index.html b/foundry/packages/frontend/index.html
index c6db25c..dc0af73 100644
--- a/foundry/packages/frontend/index.html
+++ b/foundry/packages/frontend/index.html
@@ -18,6 +18,7 @@
   </head>
   <body>
     <div id="root"></div>
+    <script src="/__foundry_runtime_config.js"></script>
     <script type="module" src="/src/main.tsx"></script>
   </body>
 </html>
diff --git a/foundry/packages/frontend/src/lib/env.ts b/foundry/packages/frontend/src/lib/env.ts
index 63e80ea..73c35ae 100644
--- a/foundry/packages/frontend/src/lib/env.ts
+++ b/foundry/packages/frontend/src/lib/env.ts
@@ -1,3 +1,15 @@
+type FoundryRuntimeConfig = {
+  backendEndpoint?: string;
+  defaultWorkspaceId?: string;
+  frontendClientMode?: string;
+};
+
+declare global {
+  interface Window {
+    __FOUNDRY_RUNTIME_CONFIG__?: FoundryRuntimeConfig;
+  }
+}
+
 function resolveDefaultBackendEndpoint(): string {
   if (typeof window !== "undefined" && window.location?.origin) {
     return `${window.location.origin}/api/rivet`;
@@ -10,20 +22,23 @@ type FrontendImportMetaEnv = ImportMetaEnv & {
 };
 
 const frontendEnv = import.meta.env as FrontendImportMetaEnv;
+const runtimeConfig = typeof window !== "undefined" ? window.__FOUNDRY_RUNTIME_CONFIG__ : undefined;
 
-export const backendEndpoint = import.meta.env.VITE_HF_BACKEND_ENDPOINT?.trim() || resolveDefaultBackendEndpoint();
+export const backendEndpoint = runtimeConfig?.backendEndpoint?.trim() || import.meta.env.VITE_HF_BACKEND_ENDPOINT?.trim() || resolveDefaultBackendEndpoint();
 
-export const defaultWorkspaceId = import.meta.env.VITE_HF_WORKSPACE?.trim() || "default";
+export const defaultWorkspaceId = runtimeConfig?.defaultWorkspaceId?.trim() || import.meta.env.VITE_HF_WORKSPACE?.trim() || "default";
 
 function resolveFrontendClientMode(): "mock" | "remote" {
-  const raw = frontendEnv.FOUNDRY_FRONTEND_CLIENT_MODE?.trim().toLowerCase();
+  const raw = runtimeConfig?.frontendClientMode?.trim().toLowerCase() || frontendEnv.FOUNDRY_FRONTEND_CLIENT_MODE?.trim().toLowerCase();
   if (raw === "mock") {
     return "mock";
   }
   if (raw === "remote" || raw === "" || raw === undefined) {
     return "remote";
   }
-  throw new Error(`Unsupported FOUNDRY_FRONTEND_CLIENT_MODE value "${frontendEnv.FOUNDRY_FRONTEND_CLIENT_MODE}". Expected "mock" or "remote".`);
+  throw new Error(
+    `Unsupported FOUNDRY_FRONTEND_CLIENT_MODE value "${runtimeConfig?.frontendClientMode ?? frontendEnv.FOUNDRY_FRONTEND_CLIENT_MODE}". Expected "mock" or "remote".`,
+  );
 }
 
 export const frontendClientMode = resolveFrontendClientMode();