Merge pull request #203 from crazy-max/san-fix

Sanitize tag earlier

README.md

@@ -31,6 +31,7 @@ ___
   * [`type=raw`](#typeraw)
   * [`type=sha`](#typesha)
 * [Notes](#notes)
+  * [Image name and tag sanitization](#image-name-and-tag-sanitization)
   * [Latest tag](#latest-tag)
   * [Global expressions](#global-expressions)
     * [`{{branch}}`](#branch)
@@ -71,7 +72,7 @@ jobs:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: name/app
       -
@@ -124,7 +125,7 @@ jobs:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             name/app
@@ -202,7 +203,7 @@ jobs:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             name/app
@@ -508,13 +509,13 @@ Can create a regular expression for matching Git tag with a pattern and capturin
 [push tag event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push) but, you can also use
 a custom value through `value` attribute.
 
-| Git tag                 | Pattern                       | Group   | Output                 |
-|-------------------------|-------------------------------|---------|------------------------|
-| `v1.2.3`                | `\d.\d.\d`                    | `0`     | `1.2.3`                |
-| `v2.0.8-beta.67`        | `v(.*)`                       | `1`     | `2.0.8-beta.67`        |
-| `v2.0.8-beta.67`        | `v(\d.\d)`                    | `1`     | `2.0`                  |
-| `20200110-RC2`          | `\d+`                         | `0`     | `20200110`             |
-| `p1/v1.2.3`             | `p1-v(\d.\d.\d)`              | `1`     | `1.2.3`                |
+| Git tag                 | Pattern          | Group   | Output                 |
+|-------------------------|------------------|---------|------------------------|
+| `v1.2.3`                | `\d.\d.\d`       | `0`     | `1.2.3`                |
+| `v2.0.8-beta.67`        | `v(.*)`          | `1`     | `2.0.8-beta.67`        |
+| `v2.0.8-beta.67`        | `v(\d.\d)`       | `1`     | `2.0`                  |
+| `20200110-RC2`          | `\d+`            | `0`     | `20200110`             |
+| `p1/v1.2.3`             | `p1/v(\d.\d.\d)` | `1`     | `1.2.3`                |
 
 Extended attributes and default values:
 
@@ -625,6 +626,22 @@ tags: |
 
 ## Notes
 
+### Image name and tag sanitization
+
+In order to comply with [the specification](https://docs.docker.com/engine/reference/commandline/tag/#extended-description),
+the image name components may contain lowercase letters, digits and separators.
+A separator is defined as a period, one or two underscores, or one or more
+dashes. A name component may not start or end with a separator.
+
+A tag name must be a valid ASCII chars sequences and may contain lowercase and
+uppercase letters, digits, underscores, periods and dashes. A tag name may not
+start with a period or a dash and may contain a maximum of 128 characters.
+
+To ease the integration in your workflow, this action will automatically:
+
+* Lowercase the image name
+* Replace invalid chars sequences with `-` for tags
+
 ### Latest tag
 
 `latest` tag is handled through the [`flavor` input](#flavor-input). It will be generated by default (`auto` mode) for:
@@ -750,7 +767,7 @@ workflow using the [`fromJSON` function](https://docs.github.com/en/actions/lear
 ```yaml
       -
         name: Docker meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         id: meta
         with:
           images: name/app
@@ -775,7 +792,7 @@ labels generated are not suitable, you can overwrite them like this:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: name/app
           labels: |

UPGRADE.md

@@ -2,7 +2,7 @@
 
 ## v2 to v3
 
-* Repository has been moved to docker org. Replace `crazy-max/ghaction-docker-meta@v2` with `docker/metadata-action@v3`
+* Repository has been moved to docker org. Replace `crazy-max/ghaction-docker-meta@v2` with `docker/metadata-action@v4`
 * The default bake target has been changed: `ghaction-docker-meta` > `docker-metadata-action`
 
 ## v1 to v2
@@ -180,7 +180,7 @@ jobs:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: name/app
       -
@@ -273,7 +273,7 @@ jobs:
       -
         name: Docker meta
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: name/app
           tags: |

__tests__/image.test.ts

@@ -53,7 +53,7 @@ describe('transform', () => {
       [
         `name=name/bar`,
         `name/foo,enable=false`,
-        `name=ghcr.io/name/foo,enable=true`
+        `name=ghcr.io/UserName/Foo,enable=true`
       ],
       [
         {
@@ -65,7 +65,7 @@ describe('transform', () => {
           enable: false,
         },
         {
-          name: `ghcr.io/name/foo`,
+          name: `ghcr.io/UserName/Foo`,
           enable: true,
         },
       ] as Image[],

__tests__/meta.test.ts

@@ -1277,9 +1277,9 @@ describe('tag', () => {
       {
         images: ['org/app', 'ghcr.io/user/app'],
         tags: [
-          `type=match,pattern=p1-v(\\d.\\d.\\d),group=1`,
-          `type=match,pattern=p1-v(\\d.\\d),group=1`,
-          `type=match,pattern=p1-v(\\d.\\d),group=3`,
+          `type=match,pattern=p1/v(\\d.\\d.\\d),group=1`,
+          `type=match,pattern=p1/v(\\d.\\d),group=1`,
+          `type=match,pattern=p1/v(\\d.\\d),group=3`,
           `type=ref,event=pr`,
           `type=sha`
         ]
@@ -1316,8 +1316,8 @@ describe('tag', () => {
       {
         images: ['org/app', 'ghcr.io/user/app'],
         tags: [
-          `type=match,pattern=p1-v(\\d.\\d.\\d),group=1`,
-          `type=match,pattern=p1-v(\\d.\\d),group=1,suffix=`,
+          `type=match,pattern=p1/v(\\d.\\d.\\d),group=1`,
+          `type=match,pattern=p1/v(\\d.\\d),group=1,suffix=`,
           `type=ref,event=pr`,
           `type=sha`
         ],

action.yml

@@ -46,5 +46,5 @@ outputs:
     description: 'JSON output of tags and labels'
 
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'

dev.Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG NODE_VERSION=12
+ARG NODE_VERSION=16
 
 FROM node:${NODE_VERSION}-alpine AS base
 RUN apk add --no-cache cpio findutils git

dist/index.js

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  * XRegExp 4.4.1
  * <xregexp.com>
  * Steven Levithan (c) 2007-present MIT License
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 //# sourceMappingURL=index.js.map

dist/index.js.map

@@ -1 +1 @@
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truncated

src/image.ts

@@ -22,7 +22,7 @@ export function Transform(inputs: string[]): Image[] {
         .split('=')
         .map(item => item.trim());
       if (parts.length == 1) {
-        images.push({name: parts[0].toLowerCase(), enable: true});
+        images.push({name: parts[0], enable: true});
       } else {
         newformat = true;
         break;
@@ -46,13 +46,13 @@ export function Transform(inputs: string[]): Image[] {
         .split('=')
         .map(item => item.trim());
       if (parts.length == 1) {
-        image.name = parts[0].toLowerCase();
+        image.name = parts[0];
       } else {
         const key = parts[0].toLowerCase();
         const value = parts[1];
         switch (key) {
           case 'name': {
-            image.name = value.toLowerCase();
+            image.name = value;
             break;
           }
           case 'enable': {

src/meta.ts

@@ -224,7 +224,7 @@ export class Meta {
     if (tag.attrs['value'].length > 0) {
       vraw = this.setGlobalExp(tag.attrs['value']);
     } else {
-      vraw = this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
+      vraw = this.context.ref.replace(/^refs\/tags\//g, '');
     }
 
     let tmatch;
@@ -251,7 +251,7 @@ export class Meta {
     if (!/^refs\/heads\//.test(this.context.ref)) {
       return version;
     }
-    const vraw = this.setValue(this.context.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-'), tag);
+    const vraw = this.setValue(this.context.ref.replace(/^refs\/heads\//g, ''), tag);
     return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? false : this.flavor.latest == 'true');
   }
 
@@ -259,7 +259,7 @@ export class Meta {
     if (!/^refs\/tags\//.test(this.context.ref)) {
       return version;
     }
-    const vraw = this.setValue(this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-'), tag);
+    const vraw = this.setValue(this.context.ref.replace(/^refs\/tags\//g, ''), tag);
     return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? true : this.flavor.latest == 'true');
   }
 
@@ -277,7 +277,7 @@ export class Meta {
       return version;
     }
 
-    const val = this.context.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-');
+    const val = this.context.ref.replace(/^refs\/heads\//g, '');
     if (tag.attrs['branch'].length == 0) {
       tag.attrs['branch'] = this.repo.default_branch;
     }
@@ -312,6 +312,7 @@ export class Meta {
     if (val.length == 0) {
       return version;
     }
+    val = Meta.sanitizeTag(val);
     if (version.main == undefined) {
       version.main = val;
     } else if (val !== version.main) {
@@ -357,20 +358,20 @@ export class Meta {
         if (!/^refs\/heads\//.test(ctx.ref)) {
           return '';
         }
-        return ctx.ref.replace(/^refs\/heads\//g, '').replace(/[^a-zA-Z0-9._-]+/g, '-');
+        return ctx.ref.replace(/^refs\/heads\//g, '');
       },
       tag: function () {
         if (!/^refs\/tags\//.test(ctx.ref)) {
           return '';
         }
-        return ctx.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
+        return ctx.ref.replace(/^refs\/tags\//g, '');
       },
       sha: function () {
         return ctx.sha.substr(0, 7);
       },
       base_ref: function () {
         if (/^refs\/tags\//.test(ctx.ref) && ctx.payload?.base_ref != undefined) {
-          return ctx.payload.base_ref.replace(/^refs\/heads\//g, '').replace(/\//g, '-');
+          return ctx.payload.base_ref.replace(/^refs\/heads\//g, '');
         }
         // FIXME: keep this for backward compatibility even if doesn't always seem
         //  to return the expected branch. See the comment below.
@@ -413,7 +414,7 @@ export class Meta {
       if (!image.enable) {
         continue;
       }
-      images.push(image.name);
+      images.push(Meta.sanitizeImageName(image.name));
     }
     return images;
   }
@@ -429,7 +430,8 @@ export class Meta {
         tags.push(`${imageName}:${partial}`);
       }
       if (this.version.latest) {
-        tags.push(`${imageName}:${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`);
+        const latestTag = `${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`;
+        tags.push(`${imageName}:${Meta.sanitizeTag(latestTag)}`);
       }
     }
     return tags;
@@ -495,4 +497,12 @@ export class Meta {
 
     return bakeFile;
   }
+
+  private static sanitizeImageName(name: string): string {
+    return name.toLowerCase();
+  }
+
+  private static sanitizeTag(tag: string): string {
+    return tag.replace(/[^a-zA-Z0-9._-]+/g, '-');
+  }
 }