Does sail build or sail build --no-cache destroy all my data or other things?

When you run sail build or sail build --no-cache, it essentially rebuilds the Docker images for your application. This process is a wrapper around docker-compose build and docker-compose build --no-cache, respectively.

Here’s a breakdown of what each command does:

• sail build: This command rebuilds the Docker images using the cache. If there are no changes in the Dockerfile or the dependencies, it will use the cached layers to speed up the build process.
• sail build --no-cache: This command forces Docker to rebuild the images from scratch without using any cached layers. This is useful if you want to ensure that all layers are rebuilt, for example, after making changes to configuration files or dependencies.

Impact on Data and Application

1. Database Data: Running sail build or sail build --no-cache does not directly affect your database data. The database data is stored in Docker volumes, which are not removed or recreated during the build process. However, if you have made changes to the database schema or data within the Dockerfile or initialization scripts, those changes will be applied when the container is started.

2. Application Code: The build process will recreate the Docker images based on your Dockerfile. If you have made changes to your application code or dependencies, those changes will be included in the new image.

3. Configuration Files: Since you mentioned modifying /etc/supervisor/supervisord.conf in the Sail container, you will need to ensure that these changes are included in your Dockerfile or in a volume mount. Otherwise, they will be lost when the container is rebuilt.

Example Dockerfile

If you need to include custom configuration files, you can copy them into the image during the build process. Here’s an example of how you might modify your Dockerfile to include a custom supervisord.conf:

FROM laravel/sail:latest

# Copy custom supervisord.conf
COPY ./supervisord.conf /etc/supervisor/supervisord.conf

# Other build steps...

Conclusion

Running sail build or sail build --no-cache is generally safe and does not destroy your database data or other persistent data. However, any changes made directly inside the container (not reflected in the Dockerfile or volume mounts) will be lost. Always ensure that important configurations and data are properly managed through Docker volumes or included in your Dockerfile.

If you have any further questions or need more specific guidance, feel free to ask!