Specify Dockerfile for gcloud build submit

user_3361180 0
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I understand gcloud uses the Dockerfile specified in the root directory of the source (.) as in the command: gcloud builds submit --tag gcr.io/[PROJECT_ID]/quickstart-image .

but I am trying to specify the Dockerfile to use to build the image which I have not found any resource on how to do that, I don't know if that is possible.

google-cloud-build gcloud kubernetes docker
5 Answers

The only way to specify a Dockerfile (i.e. other than ./Dockerfile) would be to create a cloudbuild.yaml per techtabu@. This config could then use the docker builder and provide the specific Dockerfile, i.e.:

steps:
- name: "gcr.io/cloud-builders/docker"
  args:
  - build
  - "--tag=gcr.io/$PROJECT_ID/quickstart-image"
  - "--file=./path/to/YourDockerFile"
  - .
...
images:
- "gcr.io/$PROJECT_ID/quickstart-image"

If you wish, you also get to specify an alternative name than cloudbuild.yaml.

The ./Dockerfile assumption is presumably to ease the transition to Cloud Build.

I recommend you switch to using cloudbuild.yaml for the flexibility it provides.

user_6092900

You can very easily do this by substituting the . by ./path/to/YourDockerFile, so the gcloud command will be:

gcloud builds submit --tag gcr.io/[PROJECT_ID]/quickstart-image ./path/to/YourDockerFile

So you don't have to use a cloudbuild.yaml for this.

user_83858990

I am not sure if you can specify Dockerfile, but you can use cloudbuild.yaml file. Check gcloud documentation. If you want to rename this file, you can use config option. 

    gcloud builds submit --config cloudbuild.yaml .

A sample cloudbuild.yaml file look like this,

steps:
- name: 'gcr.io/cloud-builders/docker'
  args: [ 'build', '-t', 'gcr.io/$PROJECT_ID/quickstart-image', '.' ]
images:
- 'gcr.io/$PROJECT_ID/quickstart-image'
user_12577290

Eventually the following hack works for me quite well. If you have e.g. Dockerfile.prod and Dockerfile.dev use the following to build the latter.

tar --exclude-vcs-ignores \  # sort-of .dockerignore support
    --transform='s|^\./Dockerfile.dev|./Dockerfile|' -zcf /tmp/togo.tgz . && \
            gcloud builds submit --tag=gcr.io/my-project/foo:latest /tmp/togo.tgz
user_3603900

The gcloud build submit will detect automatically your Dockerfile if present, make sure your place the file in your root directory. If you don't know that much about docker you can use this command

gcloud beta run deploy --source=.

Execute it at your root directory. the buildpacks will create the dockerfile for you and it is able to detect the stack of your application so it can build with its relevant tools.

user_66354740
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