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Workm8 Docker plugin

Installation

Install the @workm8/backstage-docker-tags package in your frontend app package:

# From your Backstage root directory
yarn add --cwd packages/app @workm8/backstage-docker-tags

Set the proxy

In your app-config.yaml located in the root directory we'll need to add a proxy to hub.docker.com. Under proxy, add the following:

proxy:
  endpoints:
    '/docker':
      target: 'https://hub.docker.com'
      changeOrigin: true

Usage

Update your EntityPage

In your EntityPage.tsx file located in packages\app\src\components\catalog we'll need to make a few changes to get the Docker

First we need to add the following imports:

import { DockerTagsTableWidget } from '@workm8/backstage-docker-tags';

You can display the Widget by adding the following code (for example, the overviewContent):

+ const dockerTagsContent = (
+    <DockerTagsTableWidget 
+       heading="Docker" 
+       columns={['name', 'username', 'status']} />
+ );

const overviewContent = (
  <Grid container spacing={3} alignItems="stretch">
    {entityWarningContent}
    <Grid item md={4}>
      <EntityAboutCard variant="gridItem" />
    </Grid>
    <Grid item md={4} xs={12}>
      <EntityCatalogGraphCard variant="gridItem" height={400} />
    </Grid>
+    <Grid item md={4} xs={12}>
+      {dockerTagsContent}
+    </Grid>
    <Grid item md={4} xs={12}>
      <EntityLinksCard />
    </Grid>
    <Grid item md={8} xs={12}>
      <EntityHasSubcomponentsCard variant="gridItem" />
    </Grid>
  </Grid>
);

Annotate your components

By adding the docker.com/repository annotation to your component, the DockerRepositoriesWidget will fetch all the versions from hub.docker.com.

apiVersion: backstage.io/v1alpha1
kind: Component
metadata:
  name: Grafana
  annotations:
+    docker.com/repository: 'grafana/grafana'

Configuration

You can override the default header, columns and pagination.

Attribute Type Default Description
heading String Docker The table Header
columns array ['name', 'username', 'status', 'architecture'] The columns that are shown. Possible values: name, username, status, architecture
initialPage number 0 The first page that is shown
pageSize number 5 The default page size
pageSizeOptions array [5, 10, 25] Possible page sizes. Must include pageSize
showCountInHeading boolean true If true, it shows the count of the total amount of Docker images in the heading.

By default, the table looks like this.

By disabling some columns, you can make it fit in smaller areas

Private repositories

For private repositories, you need to create a Personal Access Token on Docker Hub. This Personal Access Token needs to be added in the proxy.

  endpoints:
    '/docker':
      target: 'https://hub.docker.com'
      changeOrigin: true
+      headers:
+        Authorization: {PERSONAL_ACCESS_TOKEN}

Issues

If you come across any issues, please don't hesitate to open a GitHub issue.