···

       
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<hr style="margin-bottom: 20px; margin-top: 10px" />

     

       
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-
       
This can be done in a compose file as well by specifying it as an build

     

       
24
       
24
       
-
       
argument.

     

       
23
       
23
       
+
       
When using compose, it can be specified as a build argument which will be

     

       
24
       
24
       
+
       
passed to the builder.

     

       
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25
       
 
       


     

       
26
       
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```yaml

     

       
27
       
27
       
 
       
build:

     
···

       
29
       
29
       
 
       
  args: { TAG: master }

     

       
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30
       
 
       
```

     

       
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Will tell docker to pass the `TAG` argument to the `Dockerfile` when building.

     

       
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+
       
This will for example tell docker to build it using the `master` branch like

     

       
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+
       
the command.

     

       
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## Setting Up The Image

     

       
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36