Create Docker Ignore Configuration
Create a .dockerignore file.
Docker uses this file to exclude unnecessary files from the build context.
Exclude node_modules, environment files, test output, and local development artifacts.
This reduces image build context size and prevents accidental inclusion of secrets.
.dockerignore
node_modules
.env
.env.*
.git
.gitignore
coverage
logs
npm-debug.log
Dockerfile*
README.mdPrevents unnecessary files and local secrets from being included in the Docker build context.
Key Takeaways
Use .dockerignore to reduce the build context.
Exclude environment files and local dependencies.
Never bake production secrets into Docker images.