fix: use frozen lockfile in all bun installs

.vscode/launch.json

@@ -1,15 +0,0 @@
-{
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": "Connect to server",
-      "type": "go",
-      "request": "attach",
-      "mode": "remote",
-      "remotePath": "/tinyauth",
-      "port": 4000,
-      "host": "127.0.0.1",
-      "debugAdapter": "legacy"
-    }
-  ]
-}

frontend/Dockerfile.dev

@@ -5,7 +5,7 @@ WORKDIR /frontend
 COPY ./frontend/package.json ./
 COPY ./frontend/bun.lock ./
 
-RUN bun install
+RUN bun install --frozen-lockfile
 
 COPY ./frontend/public ./public
 COPY ./frontend/src ./src
@@ -19,4 +19,4 @@ COPY ./frontend/vite.config.ts ./
 
 EXPOSE 5173
 
-ENTRYPOINT ["bun", "run", "dev"]
+ENTRYPOINT ["bun", "run", "dev"]