update Docker image references, modify TypeScript target, and adjust environment variables

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "types": ["node", "jest", "@testing-library/jest-dom"],
-    "target": "es5",
+    "target": "es2015",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
     "skipLibCheck": true,
@@ -21,5 +21,5 @@
     "plugins": [{ "name": "next" }]
   },
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
-  "exclude": ["node_modules"]
+  "exclude": ["node_modules", "src/client/*"]
 }