Inject DOCKER_META_IMAGES and DOCKER_META_VERSION args in bake definition (#37)

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

Author: crazy-max

README.md

@@ -159,8 +159,8 @@ jobs:
 ### Bake definition
 
 This action also handles a bake definition file that can be used with the
-[Docker Buildx Bake action](https://github.com/crazy-max/ghaction-docker-buildx-bake). You just have to declare a
-target named `ghaction-docker-meta`.
+[Docker Buildx Bake action](https://github.com/crazy-max/ghaction-docker-buildx-bake). You just have to declare an empty
+target named `ghaction-docker-meta` and inherit from it.
 
 ```hcl
 // docker-bake.hcl
@@ -240,6 +240,10 @@ Content of `${{ steps.docker_meta.outputs.bake-file }}` file will look like this
         "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
         "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
         "org.opencontainers.image.licenses": "MIT"
+      },
+      "args": {
+        "DOCKER_META_IMAGES": "name/app",
+        "DOCKER_META_VERSION": "1.1.1"
       }
     }
   }

__tests__/meta.test.ts

@@ -1512,6 +1512,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "dev",
             }
           }
         }
@@ -1539,6 +1543,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "dev",
             }
           }
         }
@@ -1569,6 +1577,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "release1",
             }
           }
         }
@@ -1600,6 +1612,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "user/app",
+              "DOCKER_META_VERSION": "20200110",
             }
           }
         }
@@ -1640,6 +1656,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
+              "DOCKER_META_VERSION": "1.1.1",
             }
           }
         }
@@ -1673,6 +1693,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "org/app,ghcr.io/user/app",
+              "DOCKER_META_VERSION": "my",
             }
           }
         }
@@ -1707,6 +1731,10 @@ describe('bake-file', () => {
               "org.opencontainers.image.created": "2020-01-10T00:30:00.000Z",
               "org.opencontainers.image.revision": "90dd6032fac8bda1b6c4436a2e65de27961ed071",
               "org.opencontainers.image.licenses": "MIT"
+            },
+            "args": {
+              "DOCKER_META_IMAGES": "org/app",
+              "DOCKER_META_VERSION": "v1.1.1",
             }
           }
         }

dist/index.js

@@ -164,7 +164,11 @@ export class Meta {
           target: {
             'ghaction-docker-meta': {
               tags: this.tags(),
-              labels: jsonLabels
+              labels: jsonLabels,
+              args: {
+                DOCKER_META_IMAGES: this.inputs.images.join(','),
+                DOCKER_META_VERSION: this.version.main
+              }
             }
           }
         },