Added on_latest flavor to apply flavor to latest tags

__tests__/flavor.test.ts

@@ -32,7 +32,8 @@ describe('transform', () => {
       {
         latest: "true",
         prefix: "",
-        suffix: ""
+        suffix: "",
+        on_latest: "false"
       } as Flavor,
       false
     ],
@@ -43,7 +44,8 @@ describe('transform', () => {
       {
         latest: "false",
         prefix: "",
-        suffix: ""
+        suffix: "",
+        on_latest: "false"
       } as Flavor,
       false
     ],
@@ -54,7 +56,8 @@ describe('transform', () => {
       {
         latest: "auto",
         prefix: "",
-        suffix: ""
+        suffix: "",
+        on_latest: "false"
       } as Flavor,
       false
     ],
@@ -72,7 +75,8 @@ describe('transform', () => {
       {
         latest: "auto",
         prefix: "sha-",
-        suffix: ""
+        suffix: "",
+        on_latest: "false"
       } as Flavor,
       false
     ],
@@ -83,7 +87,8 @@ describe('transform', () => {
       {
         latest: "auto",
         prefix: "",
-        suffix: "-alpine"
+        suffix: "-alpine",
+        on_latest: "false"
       } as Flavor,
       false
     ],
@@ -96,10 +101,36 @@ describe('transform', () => {
       {
         latest: "false",
         prefix: "dev-",
-        suffix: "-alpine"
+        suffix: "-alpine",
+        on_latest: "false"
       } as Flavor,
       false
     ],
+    [
+      [
+        `latest=auto`,
+        `prefix=`,
+        `suffix=-alpine`,
+        `on_latest=true`
+      ],
+      {
+        latest: "auto",
+        prefix: "",
+        suffix: "-alpine",
+        on_latest: "true"
+      } as Flavor,
+      false
+    ],
+    [
+      [
+        `latest=true`,
+        `prefix=`,
+        `suffix=-alpine`,
+        `on_latest=fail`
+      ],
+      {} as Flavor,
+      true
+    ]
   ])('given %p attributes ', async (inputs: string[], expected: Flavor, invalid: boolean) => {
     try {
       const flavor = Transform(inputs);

__tests__/meta.test.ts

@@ -1589,6 +1589,78 @@ describe('latest', () => {
         "org.opencontainers.image.vendor=MyCompany"
       ]
     ],
+    [
+      'latest10',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=ref,event=tag`
+        ],
+        flavor: [
+          `latest=true`,
+          `on_latest=true`,
+          `suffix=-alpine`
+        ],
+      } as Inputs,
+      {
+        main: 'v1.1.1-alpine',
+        partial: [],
+        latest: true
+      } as Version,
+      [
+        'org/app:v1.1.1-alpine',
+        'org/app:latest-alpine',
+        'ghcr.io/user/app:v1.1.1-alpine',
+        'ghcr.io/user/app:latest-alpine'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=v1.1.1-alpine",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'latest12',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=ref,event=tag`
+        ],
+        flavor: [
+          `latest=true`,
+          `on_latest=true`,
+          `prefix=dev-`
+        ],
+      } as Inputs,
+      {
+        main: 'dev-v1.1.1',
+        partial: [],
+        latest: true
+      } as Version,
+      [
+        'org/app:dev-v1.1.1',
+        'org/app:dev-latest',
+        'ghcr.io/user/app:dev-v1.1.1',
+        'ghcr.io/user/app:dev-latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=dev-v1.1.1",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ]
   ])('given %p with %p event', tagsLabelsTest);
 });
 

dist/index.js

@@ -136,7 +136,8 @@ function Transform(inputs) {
     const flavor = {
         latest: 'auto',
         prefix: '',
-        suffix: ''
+        suffix: '',
+        on_latest: 'false'
     };
     for (const input of inputs) {
         const parts = input.split('=', 2);
@@ -159,6 +160,13 @@ function Transform(inputs) {
                 flavor.suffix = parts[1];
                 break;
             }
+            case 'on_latest': {
+                flavor.on_latest = parts[1];
+                if (!['true', 'false'].includes(flavor.on_latest)) {
+                    throw new Error(`Invalid on_latest flavor entry: ${input}`);
+                }
+                break;
+            }
             default: {
                 throw new Error(`Unknown entry: ${input}`);
             }
@@ -168,6 +176,7 @@ function Transform(inputs) {
     core.info(`latest=${flavor.latest}`);
     core.info(`prefix=${flavor.prefix}`);
     core.info(`suffix=${flavor.suffix}`);
+    core.info(`on_latest=${flavor.on_latest}`);
     core.endGroup();
     return flavor;
 }
@@ -633,9 +642,14 @@ class Meta {
                 tags.push(`${imageLc}:${partial}`);
             }
             if (this.version.latest) {
+                if (this.flavor.on_latest === "true") {
+                    tags.push(`${imageLc}:${this.flavor.prefix}latest${this.flavor.suffix}`);
+                }
+                else {
                     tags.push(`${imageLc}:latest`);
                 }
             }
+        }
         return tags;
     }
     getLabels() {

src/flavor.ts

@@ -4,13 +4,15 @@ export interface Flavor {
   latest: string;
   prefix: string;
   suffix: string;
+  on_latest: string;
 }
 
 export function Transform(inputs: string[]): Flavor {
   const flavor: Flavor = {
     latest: 'auto',
     prefix: '',
-    suffix: ''
+    suffix: '',
+    on_latest: 'false'
   };
 
   for (const input of inputs) {
@@ -34,6 +36,13 @@ export function Transform(inputs: string[]): Flavor {
         flavor.suffix = parts[1];
         break;
       }
+      case 'on_latest': {
+        flavor.on_latest = parts[1];
+        if (!['true', 'false'].includes(flavor.on_latest)) {
+          throw new Error(`Invalid on_latest flavor entry: ${input}`);
+        }
+        break;
+      }
       default: {
         throw new Error(`Unknown entry: ${input}`);
       }
@@ -44,6 +53,8 @@ export function Transform(inputs: string[]): Flavor {
   core.info(`latest=${flavor.latest}`);
   core.info(`prefix=${flavor.prefix}`);
   core.info(`suffix=${flavor.suffix}`);
+  core.info(`on_latest=${flavor.on_latest}`);
+
   core.endGroup();
 
   return flavor;

src/meta.ts

@@ -304,9 +304,13 @@ export class Meta {
         tags.push(`${imageLc}:${partial}`);
       }
       if (this.version.latest) {
+        if (this.flavor.on_latest === 'true') {
+          tags.push(`${imageLc}:${this.flavor.prefix}latest${this.flavor.suffix}`);
+        } else {
           tags.push(`${imageLc}:latest`);
         }
       }
+    }
     return tags;
   }