feat: allow the images input to be empty, to output just tags

Signed-off-by: Jason D'Amour <[email protected]>

Author: jasondamour

src/main.ts

@@ -15,10 +15,6 @@ actionsToolkit.run(
   // main
   async () => {
     const inputs: Inputs = getInputs();
-    if (inputs.images.length == 0) {
-      throw new Error(`images input required`);
-    }
-
     const toolkit = new Toolkit({githubToken: inputs.githubToken});
     const context = await getContext(inputs.context);
     const repo = await toolkit.github.repoData();

src/meta.ts

@@ -441,14 +441,27 @@ export class Meta {
       return [];
     }
     const tags: Array<string> = [];
-    for (const imageName of this.getImageNames()) {
-      tags.push(`${imageName}:${this.version.main}`);
+    const images = this.getImageNames();
+    if (Array.isArray(images) && images.length) {
+      for (const imageName of images) {
+        tags.push(`${imageName}:${this.version.main}`);
+        for (const partial of this.version.partial) {
+          tags.push(`${imageName}:${partial}`);
+        }
+        if (this.version.latest) {
+          const latestTag = `${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`;
+          tags.push(`${imageName}:${Meta.sanitizeTag(latestTag)}`);
+        }
+      }
+    }
+    else {
+      tags.push(this.version.main);
       for (const partial of this.version.partial) {
-        tags.push(`${imageName}:${partial}`);
+        tags.push(partial);
       }
       if (this.version.latest) {
         const latestTag = `${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`;
-        tags.push(`${imageName}:${Meta.sanitizeTag(latestTag)}`);
+        tags.push(Meta.sanitizeTag(latestTag));
       }
     }
     return tags;