fix: correct pattern examples

README.md

@@ -603,7 +603,7 @@ tags: |
 ```yaml
 tags: |
  # minimal
- type=match,pattern=\d.\d.\d
+ type=match,"pattern=\\d+.\\d+.\\d+"
  # define match group
  type=match,pattern=v(.*),group=1
  # use custom value instead of git tag
@@ -614,13 +614,13 @@ Can create a regular expression for matching Git tag with a pattern and
 capturing group. Will be used on a [push tag event](https://docs.github.com/en/actions/using-workflows/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:
 
@@ -809,7 +809,7 @@ tags: |
 
 #### `{{branch}}`
 
-Returns the branch name that triggered the workflow run. Will be empty if not 
+Returns the branch name that triggered the workflow run. Will be empty if not
 a branch reference:
 
 | Event | Ref | Output |
@@ -847,11 +847,11 @@ workflow run. Will be empty for a branch reference:
 | `push` | `refs/heads/my/branch` | |
 | `push tag`* | `refs/tags/v1.2.3` | `master` |
 
-> *`base_ref` is available in the push payload but doesn't always seem to 
+> *`base_ref` is available in the push payload but doesn't always seem to
 > return the expected branch when the push tag event occurs. It's also
 > [not documented in GitHub docs](https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#push).
 > We keep it for backward compatibility, but it's **not recommended relying on it**.
-> More context in [#192](https://github.com/docker/metadata-action/pull/192#discussion_r854673012). 
+> More context in [#192](https://github.com/docker/metadata-action/pull/192#discussion_r854673012).
 
 #### `{{is_default_branch}}`
 

__tests__/fixtures/event_release_created.env

@@ -13,8 +13,8 @@ GITHUB_GRAPHQL_URL=https://api.github.com/graphql
 GITHUB_HEAD_REF=
 GITHUB_JOB=test
 GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_82c844c7-54b3-4b5d-a1e1-4f9f2e936d4f
-GITHUB_REF=refs/tags/v1.1.1
-GITHUB_REF_NAME=v1.1.1
+GITHUB_REF=refs/tags/v101.12.13
+GITHUB_REF_NAME=v101.12.13
 GITHUB_REF_PROTECTED=false
 GITHUB_REF_TYPE=tag
 GITHUB_REPOSITORY=docker/test-docker-action

__tests__/fixtures/event_tag_v1.1.1.env → __tests__/fixtures/event_tag_v101.12.13.env

@@ -8,13 +8,13 @@ GITHUB_API_URL=https://api.github.com
 GITHUB_BASE_REF=
 GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_7703d3cb-84db-438f-9f97-46e159388a55
 GITHUB_EVENT_NAME=push
-GITHUB_EVENT_PATH=./__tests__/fixtures/event_tag_v1.1.1.json
+GITHUB_EVENT_PATH=./__tests__/fixtures/event_tag_v101.12.13.json
 GITHUB_GRAPHQL_URL=https://api.github.com/graphql
 GITHUB_HEAD_REF=
 GITHUB_JOB=test
 GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_7703d3cb-84db-438f-9f97-46e159388a55
-GITHUB_REF=refs/tags/v1.1.1
-GITHUB_REF_NAME=v1.1.1
+GITHUB_REF=refs/tags/v101.12.13
+GITHUB_REF_NAME=v101.12.13
 GITHUB_REF_PROTECTED=false
 GITHUB_REF_TYPE=tag
 GITHUB_REPOSITORY=docker/test-docker-action