Kitematic hostname3/16/2023 Volumes are used in compose file mapping to represent next root key. Now, let us look at volumes, compose files, version, services, variables, extension fields, and yaml alternatives in YAML configuration. You can also use the mapping on the same line as. Line with a – is used with indented mapping in a sequence. Mappings also can be combined with sequence. 3.2.2.3 CombinationsĬombination of sequence and mapping collections is possible in a yaml configuration. Indentation shows the level of the item in the sequence. Dashes are used to specify the items in a sequence. Different types of mappings supported in YAML compose file are: Now, let us look at collection types supported in YAML configuration 3.2.2 CollectionsĬollections are related to a set of elements with data type values.The following are different types of YAML collections: The following are the basic data types supported in YAML: Let us look at the data types supported in YAML configuration 3.2.1 Data Types javacodegeeks_webserver/src/test:/usr/share/nginx/html POSTGRES_DB=javacodegeeksdb, javacodegeeksdb_dev YAML stands for Yet Another Markup Language. However, only the web is externally through the 8000 of our docker-machine and Docker creates a binding between this port and the container 8000 port. With this docker-compose.yml file, Compose simulates two machines with different IP addresses in the same local network because they are linked (i.e link property). However, for the Redis server, the image is downloaded from the DockerHub repository. It means that in order web container needs to build a Docker image that appears in our local file system. Notice that in the first case, appears the build property, whereas in the second case, the image property. This file specifies two containers: web, which contains our Java code to launch a web server, and Redis server. Lastly, run docker-compose up and Compose will start and run your entire app.Ĭreate an empty project called todos and copy the following docker-compose.yml inside the project directory.Create the web application and its Dockerfile to create the runtime environment anywhere.
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