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validate-dockerfile
Advanced tools
#validate-dockerfile
NodeJS validator for dockerfiles.
##Installation
npm install --save validate-dockerfile
##Usage:
var validateDockerfile = require('validate-dockerfile');
var dockerfile = 'FROM ubuntu/nodejs';
var isValid = validateDockerfile(dockerfile);
##Returned value
If the dockerfile is valid, the object returned will be simply:
{
valid: true
}
If something went wrong somewhere, the object will detail what and where:
{
valid: false,
line: 4,
message: 'Invalid instruction'
}
The error messages that can be returned are:
Invalid instruction
CONJURE stolen_data_tapes
Bad parameters
FROM Incom/Z-95 Headhunter
Missing or misplaced FROM
FROM
is not the first instruction in the dockerfile.Missing CMD
CMD
instructionInvalid type
Line numbers will be returned on Missing FROM
, Bad parameters
and Invalid instruction
errors.
##CLI
Install validate-dockerfile globally (npm install -g validate-dockerfile
) to gain access to docklint
, the CLI wrapper for validate-dockerfile.
docklint
takes one parameter, the path to a Dockerfile. If no path is given, it looks for a Dockerfile in the current directory. It will exit with a code of 0
if the Dockerfile is legit, 1
otherwise.
##TODO
Non-mission-critical stuff that'd be nice to have:
Examples used in testing borrowed from https://github.com/kstaken/dockerfile-examples/tree/master/salt-minion. Thanks!
FAQs
Validates a Dockerfile
The npm package validate-dockerfile receives a total of 50 weekly downloads. As such, validate-dockerfile popularity was classified as not popular.
We found that validate-dockerfile demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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