Quiz: In `docker-compose.yml`, what does the `depends_on` option control?
depends_on dictates container launch order, ensuring database containers start before dependent API containers.
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depends_on dictates container launch order, ensuring database containers start before dependent API containers.
docker build -t myimage . reads the Dockerfile in the current directory and builds a new image tagged as myimage .
docker build -t myapp . reads the Dockerfile in the current directory and creates a new container image tagged as myapp .
Docker executes Dockerfile commands sequentially and checks its build cache; if a layer changes (e.g. COPY . ), all following layers must …
Docker Volumes are isolated and managed within Docker's storage area ( /var/lib/docker/volumes/ ), while Bind Mounts mount explicit host …
Docker Compose uses YAML (specifically docker-compose.yml or compose.yaml ) to define multi-container applications.
Docker Compose uses YAML files ( docker-compose.yml ) to configure application services, networks, and persistent volumes.
Multi-stage builds strip out compilers (gcc, build-essential, headers), producing tiny, secure production container images (e.g. python:3.12-slim ).