Compose Name Notice For Free

Try Docker Compose Step 1: Define the application dependencies. ... Step 2: Create a Dockerfile. ... Step 3: Define services in a Compose file. ... Step 4: Build and run your app with Compose. ... Step 5: Edit the Compose file to add a bind mount. ... Step 6: Re-build and run the app with Compose. ... Step 7: Update the application.

The Compose file is a YAML file defining services, networks and volumes. The default path for a Compose file is ./docker-compose.yml . Tip: You can use either a .yml or .yaml extension for this file. They both work.

? By default, Docker Compose uses the project directory name as the project name. To provide a custom project name, we can use the --project-name or -p flag with the $ docker-compose command. You can also use the COMPOSE_PROJECT_NAME environment variable to do the same (ref).

COMPOSE_PROJECT_NAME. Sets the project name. This value is prepended along with the service name to the container's name on startup. For example, if your project name is myapp and it includes two services db and web , then Compose starts containers named myapp-db-1 and myapp-web-1 respectively.

You can set environment variables in a service's containers with the environment attribute in your Compose file. It works in the same way as docker run -e VARIABLE=VALUE ... The value of the DEBUG variable in the container is taken from the value for the same variable in the shell in which Compose is run.

Your app's network is given a name based on the ?project name?, which is based on the name of the directory it lives in. You can override the project name with either the --project-name flag{ or the COMPOSE_PROJECT_NAME environment variable.

The default filename is docker-compose. yml . You can name the manifest name as you like, but you have to pass the filename in the docker-compose command.

Specifying a path to a single Compose file You can use the -f flag to specify a path to a Compose file that is not located in the current directory, either from the command line or by setting up a COMPOSE_FILE environment variable in your shell or in an environment file.