Question 84617 in Docker Question posted in
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How to create DynamoDB table using docker CMD instruction and the AWS CLI inside running container?

Hello have a simple Dockerfile which has to create the DynamoDB tables:

FROM amazon/aws-cli AS seed                                                                                                                            
                                                                                                                                                       
CMD                                                                                                                                                   
aws dynamodb --endpoint-url http://localhost:8080 create-table                                                                                        
    --table-name mytable                                                                                                            
    --attribute-definitions AttributeName=user_id,AttributeType=N AttributeName=order_id,AttributeType=N 
    --key-schema AttributeName=user_id,KeyType=HASH AttributeName=order_id,KeyType=RANGE                                                              
    --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5                                                                                 
    --region eu-west-2

When I’m trying to run it I get the following output:

Attaching to my-container
my-container       | 
my-container       | usage: aws [options] <command> <subcommand> [<subcommand> ...] [parameters]
my-container       | To see help text, you can run:
my-container       | 
my-container       |   aws help
my-container       |   aws <command> help
my-container       |   aws <command> <subcommand> help
my-container       | 
my-container       | aws: error: argument command: Invalid choice, valid choices are:
my-container       | 
my-container       | accessanalyzer                           | account                                 
my-container       | acm                                      | acm-pca                                 
my-container       | alexaforbusiness                         | amp                                     
my-container       | amplify                                  | amplifybackend                          
my-container       | amplifyuibuilder                         | apigateway                              
my-container       | apigatewaymanagementapi                  | apigatewayv2                            

// Lot of services in here
                       
my-container       | s3                                       | ddb                                     
my-container       | configure                                | deploy                                  
my-container       | configservice                            | opsworks-cm                             
my-container       | history                                  | cli-dev                                 
my-container       | help                                    
my-container       | 
my-container exited with code 252

What am I doing wrong? Thanks for any help!

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2

Answers


  1. 0

    In your command you must not have a space after that why maybe you recevie the error because the rest statements is ignored.

    Try test again with this :

    aws dynamodb --endpoint-url http://localhost:8080 create-table 
--table-name mytable 
--attribute-definitions AttributeName=user_id,AttributeType=N AttributeName=order_id,AttributeType=N 
--key-schema AttributeName=user_id,KeyType=HASH AttributeName=order_id,KeyType=RANGE 
--provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5 
--region eu-west-2

    And also try to have a fake profile, because its need an access key and a secret key even if its locally

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  2. 0

    With this particular image, the CMD must be in JSON-array syntax (one shell word to an array element) and must not contain the aws command.

    FROM amazon/aws-cli
CMD ["dynamodb", "create-table", "..."]

    This is because the aws-cli image declares ENTRYPOINT ["aws"], the ENTRYPOINT and CMD are combined into a single command, and string-format CMD inserts a shell wrapper. Your main container command in the current form is something like aws sh -c 'aws dynamodb ...' which the tool doesn’t really understand.

    (I might run this particular command as a standalone docker run command and not try to package it into an image, or possibly use the AWS SDK as part of your integration-test setup code. The explicit localhost endpoint also seems like it might not work well, since that will usually refer to the same container that’s only running the AWS CLI.)

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