能否从Google Cloud Run容器（服务）提交容器文件变更与配置以生成新镜像？（类docker commit功能）

Great question! Let’s cut to the chase first: No, you can’t directly do this with Google Cloud Run, and here’s why that’s the case:

• Cloud Run is a fully managed serverless platform built for stateless workloads. The container instances it spins up are short-lived—they come and go based on traffic, and you don’t get persistent access to their file systems. Any changes you make to a running instance are gone the second that instance shuts down.
• Unlike running Docker on your own machine or a VM, you don’t have full shell access to a Cloud Run container that would let you tweak files and then run a docker commit-style command. While you can use gcloud run services exec to run debug commands in a live instance, this is strictly for troubleshooting, not making permanent changes.
• Cloud Run’s entire deployment model revolves around pre-built container images stored in a registry (like Google Artifact Registry or Container Registry). Every update to your service has to start with modifying your source code or Dockerfile, rebuilding the image, pushing it to the registry, then redeploying.

So What’s the Workaround If You Need to Capture Container Changes? #

If you’re trying to replicate the docker commit workflow (say, you modified a running container and want to save those tweaks as a new image), here are your best options:

• Use local Docker: Pull the original image your Cloud Run service uses, run it on your local machine, make all your changes, then use docker commit to create a new image. Push this updated image to your registry, then redeploy your Cloud Run service with it.
• Formalize changes in your Dockerfile: This is the recommended practice for Cloud Run (and most container workflows). Instead of making one-off changes to a live container, update your Dockerfile to include those modifications. This keeps your deployments reproducible, version-controlled, and easy to maintain.
• Temporary overrides with mounts: If you just need to test changes quickly without rebuilding the whole image, you can use Cloud Run’s volume mounts (like mounting a Cloud Storage bucket or Secret Manager secrets) to inject modified files or settings temporarily. But keep in mind, this isn’t a way to create a new image—it’s just a short-term fix for testing.

内容的提问来源于stack exchange，提问作者arvindwill