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<@ULVA73B9P> i would like to push the built images...
# ask-marvin
p
@Marvin i would like to push the built images to gitlab registry and pull it from there. I am using docker type work-pool
m
✅ thought for 77.8 seconds
Here's a comprehensive guide to set up your Prefect flows with GitLab's container registry: 1. First, install the required package:
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pip install prefect-gitlab
2. Register the GitLab block types:
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prefect block register -m prefect_gitlab
3. Create a Docker work pool:
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prefect work-pool create "gitlab-docker-pool" --type docker
4. Configure GitLab Credentials: You can do this either through the UI or in your Python code:
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python
from prefect_gitlab import GitLabCredentials

gitlab_credentials = GitLabCredentials(
    gitlab_url="<https://gitlab.com>",  # or your self-hosted GitLab URL
    token="your-gitlab-token"  # Personal Access Token with appropriate permissions
)
gitlab_credentials.save("gitlab-creds", overwrite=True)
5. Set up your flow deployment:
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python
from prefect import flow
from prefect.deployments import Deployment

@flow
def your_flow():
    # Your flow logic here
    pass

# Deploy the flow
deployment = flow.from_source(
    source="<https://gitlab.com/your-username/your-repo>",
    entrypoint="path/to/your/flow.py:your_flow",
).deploy(
    name="gitlab-docker-flow",
    work_pool_name="gitlab-docker-pool",
    image="<http://registry.gitlab.com/your-username/your-repo/image-name:tag|registry.gitlab.com/your-username/your-repo/image-name:tag>",
    push=True  # This will push the image to the registry
)
6. Configure your 
prefect.yaml
:
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yaml
deployments:
  - name: gitlab-docker-flow
    version: null
    tags: []
    description: null
    schedule: null
    flow_name: your_flow
    entrypoint: path/to/your/flow.py:your_flow
    parameters: {}
    work_pool:
      name: gitlab-docker-pool
      work_queue_name: null
      job_variables:
        image: <http://registry.gitlab.com/your-username/your-repo/image-name:tag|registry.gitlab.com/your-username/your-repo/image-name:tag>
        image_pull_policy: ALWAYS
        # Add GitLab registry credentials if needed
        image_pull_secrets:
          - name: gitlab-registry-credentials
7. Start your worker:
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prefect worker start --pool gitlab-docker-pool
Important Notes: 1. Make sure you have appropriate access to your GitLab registry 2. You'll need to configure Docker authentication for GitLab. This typically involves:
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   docker login <http://registry.gitlab.com|registry.gitlab.com>
3. If you're using a private GitLab registry, ensure your worker has the necessary credentials to pull images Common Gotchas: - Ensure your GitLab token has the appropriate permissions (read_registry, write_registry) - Double-check your image names follow the format: 
<http://registry.gitlab.com/group/project/image-name:tag|registry.gitlab.com/group/project/image-name:tag>
- If you're using a self-hosted GitLab instance, adjust the registry URL accordingly For security best practices: - Store sensitive credentials using Prefect blocks - Use environment variables for sensitive values - Consider using GitLab CI/CD variables for additional security Would you like me to elaborate on any of these steps or provide more specific information about your use case?
p
@Marvin give docker access during docker build step to pull a base image in yaml config file
m
✅ thought for 134.2 seconds
Based on the research, I'll help you set up Docker authentication for pulling private base images in your Prefect deployment configuration. Here's how to do it in Prefect 3.x using the 
prefect.yaml
file: 1. First, you'll need to create a Secret block to store your Docker credentials. You can do this via the UI or using Python:
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python
from prefect.blocks.system import Secret

# Create a secret block for Docker credentials
docker_password = Secret(value="your-docker-password")
docker_password.save(name="docker-password")

# If using Docker Hub username
docker_username = Secret(value="your-docker-username")
docker_username.save(name="docker-username")
2. Then, in your 
prefect.yaml
, you can configure the Docker authentication step before building:
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yaml
build:
  - prefect_docker.builds.BuildConfig:
      # Add authentication steps before the build
      pre_build_steps:
        - bash: |
            echo "{{ prefect.blocks.secret.docker-password }}" | docker login -u "{{ prefect.blocks.secret.docker-username }}" --password-stdin

      # Your regular build configuration
      image: your-image-name
      tag: latest
      dockerfile: Dockerfile
If you're using a private registry other than Docker Hub, modify the login command accordingly:
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yaml
build:
  - prefect_docker.builds.BuildConfig:
      pre_build_steps:
        - bash: |
            echo "{{ prefect.blocks.secret.docker-password }}" | docker login your.private.registry -u "{{ prefect.blocks.secret.docker-username }}" --password-stdin
      
      image: your.private.registry/your-image-name
      tag: latest
      dockerfile: Dockerfile
Key points to note: 1. The secrets (
docker-password
and 
docker-username
) must be created and stored in Prefect before running the deployment. 2. The 
pre_build_steps
section executes before the Docker build, ensuring authentication is in place. 3. Use 
{{ prefect.blocks.secret.block-name }}
syntax to reference your stored secrets. 4. The Docker login command is executed in a bash step before the build process begins. This configuration will allow your deployment to authenticate with Docker and pull private base images during the build process. Make sure you have the appropriate permissions and that your secrets are properly configured in your Prefect environment. For security best practices: - Never commit Docker credentials directly in the YAML file - Always use Prefect Secret blocks to manage sensitive credentials - Consider using temporary tokens or service accounts where possible - Ensure your secrets have appropriate access scopes for your registry Would you like me to provide more specific examples for a particular registry or explain how to set up the Secret blocks in more detail?
p
@Marvin i am using the docker-regitry-credentials block
m
✅ thought for 49.5 seconds
Let me show you how to configure your 
prefect.yaml
to use the Docker Registry Credentials block for authentication during builds. Here's the correct configuration:
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yaml
build:
  - prefect_docker.builds.BuildConfig:
      # Reference your Docker Registry Credentials block
      credentials: "{{ prefect.blocks.docker-registry-credentials.your-block-name }}"
      image: your-image-name
      tag: latest
      dockerfile: Dockerfile
That's it! The 
credentials
field will automatically handle the Docker login process for you when referenced this way. The Docker Registry Credentials block manages all the authentication details securely. To set up the prerequisite Docker Registry Credentials block, you can do it either through: 1. Python code:
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from prefect.blocks.docker import DockerRegistryCredentials

docker_credentials = DockerRegistryCredentials(
    username="your-username",
    password="your-password",
    registry_url="your.private.registry"  # optional, defaults to Docker Hub
)
docker_credentials.save(name="your-block-name")
2. Or through the Prefect UI: - Navigate to Blocks - Click the + button - Select "Docker Registry Credentials" - Fill in your credentials - Save with your chosen block name Key advantages of using the Docker Registry Credentials block: - It handles the authentication process automatically - Credentials are stored securely and encrypted - No need to manually write login commands - Works seamlessly with both Docker Hub and private registries - Credentials are never exposed in logs or configuration files Would you like me to provide more specific examples for your particular registry or help with setting up the Docker Registry Credentials block?
p
@Marvin build: # use git commit has to tag the image - prefect.deployments.steps.run_shell_script: id: get-commit-hash script: git rev-parse --short HEAD stream_output: false - prefect.deployments.steps.run_shell_script: id: get-branch-name script: git rev-parse --abbrev-ref HEAD stream_output: false - prefect_docker.deployments.steps.build_docker_image: id: build_image credentials: '{{ prefect.blocks.docker-registry-credentials.novum-registry}}' requires: prefect-docker>=0.6.1 image_name: n0vum/senec-monitoring tag: '{{ get-commit-hash.stdout }}' # The deployment needs to be run from the root directory of the project dockerfile: ./workflow/Dockerfile.senec buildargs: GITLAB_TOKEN_NAME: "prefect-token" GITLAB_ACCESS_TOKEN: "{{ prefect.blocks.secret.gitlab-token }}" network_mode: host nocache: True this is my yaml file and i got an error TypeError: BuildApiMixin.build() got an unexpected keyword argument 'credentials'
m
✅ thought for 12.2 seconds
I see the issue. The error occurs because the 
credentials
parameter is being used in the wrong location. In Prefect's Docker build configuration, the authentication credentials should be handled differently. Let me help you correct this. Here's the corrected version of your YAML file:
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yaml
build:
  # use git commit hash to tag the image
  - prefect.deployments.steps.run_shell_script:
      id: get-commit-hash
      script: git rev-parse --short HEAD
      stream_output: false

  - prefect.deployments.steps.run_shell_script:
      id: get-branch-name
      script: git rev-parse --abbrev-ref HEAD
      stream_output: false

  - prefect_docker.deployments.steps.build_docker_image:
      id: build_image
      requires: prefect-docker>=0.6.1
      image_name: n0vum/senec-monitoring
      tag: '{{ get-commit-hash.stdout }}'
      # The deployment needs to be run from the root directory of the project
      dockerfile: ./workflow/Dockerfile.senec
      buildargs:
        GITLAB_TOKEN_NAME: "prefect-token"
        GITLAB_ACCESS_TOKEN: "{{ prefect.blocks.secret.gitlab-token }}"
      network_mode: host
      nocache: True
Then, add a separate step for authentication before the build:
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yaml
build:
  - prefect_docker.deployments.steps.docker_registry_login:
      block_name: novum-registry
  
  # Your existing steps follow...
  - prefect.deployments.steps.run_shell_script:
      id: get-commit-hash
      script: git rev-parse --short HEAD
      stream_output: false

  - prefect.deployments.steps.run_shell_script:
      id: get-branch-name
      script: git rev-parse --abbrev-ref HEAD
      stream_output: false

  - prefect_docker.deployments.steps.build_docker_image:
      id: build_image
      requires: prefect-docker>=0.6.1
      image_name: n0vum/senec-monitoring
      tag: '{{ get-commit-hash.stdout }}'
      dockerfile: ./workflow/Dockerfile.senec
      buildargs:
        GITLAB_TOKEN_NAME: "prefect-token"
        GITLAB_ACCESS_TOKEN: "{{ prefect.blocks.secret.gitlab-token }}"
      network_mode: host
      nocache: True
The key changes are: 1. Removed the 
credentials
parameter from the 
build_docker_image
step (as it's not a valid parameter) 2. Added a separate 
docker_registry_login
step that uses your Docker Registry Credentials block This configuration will: 1. First authenticate with your registry using the credentials stored in your block 2. Then proceed with the git operations 3. Finally build the Docker image with the proper authentication in place The 
docker_registry_login
step handles the authentication automatically using your stored Docker Registry Credentials block, and the authentication will persist for the subsequent build step. Make sure you have the latest version of 
prefect-docker
installed, as some features might require recent versions. You can update it using:
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pip install -U prefect-docker
Would you like me to explain any part of this configuration in more detail?
p
@Marvin AttributeError: module 'prefect_docker.deployments.steps' has no attribute 'docker_registry_login'
m
🔧 Using: 
explore_module_offerings
📊 Tools used: • 
explore_module_offerings
(7x)
❌ Error: No module named 'prefect_docker.deployments.steps'
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