feat: support custom package index (UV_DEFAULT_INDEX) for Container builds

Enterprise customers using internal artifact repositories instead of
public PyPI can now configure custom uv index URLs in
~/.agentcore/config.json. The CLI forwards these as Docker build args
during container image builds (dev, package, deploy).

Author: jesseturner21

src/assets/container/python/Dockerfile

@@ -1,7 +1,7 @@
 FROM ghcr.io/astral-sh/uv:python3.12-bookworm-slim
 
-ARG UV_INDEX_URL
-ARG UV_EXTRA_INDEX_URL
+ARG UV_DEFAULT_INDEX
+ARG UV_INDEX
 
 WORKDIR /app
 
@@ -10,8 +10,8 @@ ENV UV_SYSTEM_PYTHON=1 \
     UV_NO_PROGRESS=1 \
     PYTHONUNBUFFERED=1 \
     DOCKER_CONTAINER=1 \
-    UV_INDEX_URL=${UV_INDEX_URL} \
-    UV_EXTRA_INDEX_URL=${UV_EXTRA_INDEX_URL}
+    UV_DEFAULT_INDEX=${UV_DEFAULT_INDEX} \
+    UV_INDEX=${UV_INDEX}
 
 RUN useradd -m -u 1000 bedrock_agentcore
 

src/lib/packaging/build-args.ts

@@ -7,7 +7,7 @@ import { readCliConfig } from '../utils/cli-config';
 export function getUvBuildArgs(): string[] {
   const config = readCliConfig();
   const args: string[] = [];
-  if (config.uvIndexUrl) args.push('--build-arg', `UV_INDEX_URL=${config.uvIndexUrl}`);
-  if (config.uvExtraIndexUrl) args.push('--build-arg', `UV_EXTRA_INDEX_URL=${config.uvExtraIndexUrl}`);
+  if (config.uvDefaultIndex) args.push('--build-arg', `UV_DEFAULT_INDEX=${config.uvDefaultIndex}`);
+  if (config.uvIndex) args.push('--build-arg', `UV_INDEX=${config.uvIndex}`);
   return args;
 }

src/lib/utils/cli-config.ts

@@ -5,8 +5,8 @@ import { join } from 'path';
 const CONFIG_FILE = join(homedir(), '.agentcore', 'config.json');
 
 export interface CliConfig {
-  uvIndexUrl?: string;
-  uvExtraIndexUrl?: string;
+  uvDefaultIndex?: string;
+  uvIndex?: string;
 }
 
 /**
@@ -18,8 +18,8 @@ export function readCliConfig(): CliConfig {
     const data = readFileSync(CONFIG_FILE, 'utf-8');
     const parsed: Record<string, unknown> = JSON.parse(data) as Record<string, unknown>;
     const config: CliConfig = {};
-    if (typeof parsed.uvIndexUrl === 'string') config.uvIndexUrl = parsed.uvIndexUrl;
-    if (typeof parsed.uvExtraIndexUrl === 'string') config.uvExtraIndexUrl = parsed.uvExtraIndexUrl;
+    if (typeof parsed.uvDefaultIndex === 'string') config.uvDefaultIndex = parsed.uvDefaultIndex;
+    if (typeof parsed.uvIndex === 'string') config.uvIndex = parsed.uvIndex;
     return config;
   } catch {
     return {};