docs(README): Use main branch in examples

Updated examples to use the main branch and added note advising users
to use tagged revisions for production instead of the main branch.
This change reduces the need to update the README every time a
new revision of the GitHub action for ORT is tagged.

Signed-off-by: Thomas Steenbergen <[email protected]>

Author: tsteenbe

README.md

@@ -7,6 +7,9 @@ within [GitHub Actions][gh-action-docs].
 
 See [action.yml](action.yml)
 
+Note: All examples below use the main branch.
+When implementing the GitHub Action for ORT in production, it's recommended to use the latest [tags][ort-gh-action-tags].
+
 ### Basic
 
 ```yaml
@@ -19,7 +22,7 @@ jobs:
       - name: Checkout project
         uses: actions/checkout@v3
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
 ```
 
 Alternatively, you can also use ORT to download the project sources using Git, Git-repo, Mercurial or Subversion.
@@ -32,7 +35,7 @@ jobs:
       - name: Use HTTPS instead of SSH for Git cloning
         run: git config --global url.https://github.com/.insteadOf ssh://[email protected]/
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           vcs-url: 'https://github.com/jshttp/mime-types.git'
 ```
@@ -63,7 +66,7 @@ jobs:
         with:
           repository: 'jshttp/mime-types'
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           allow-dynamic-versions: 'true'
           ort-cli-args: '-P ort.analyzer.enabledPackageManagers=NPM,Yarn,Yarn2'
@@ -85,7 +88,7 @@ jobs:
         with:
           repository: 'jshttp/mime-types'
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           allow-dynamic-versions: 'true'
           ort-cli-analyze-args: >
@@ -115,7 +118,7 @@ jobs:
         with:
           repository: 'jshttp/mime-types'
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           allow-dynamic-versions: 'true'
           fail-on: 'violations'
@@ -156,7 +159,7 @@ jobs:
             StrictHostKeyChecking no
           END
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           allow-dynamic-versions: 'true'
 ```
@@ -186,7 +189,7 @@ jobs:
           github-server-url: 'https://git.example.com'
           token: ${{ secrets.PERSONAL_TOKEN_2 }}
       - name: Run GitHub action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           ort-config-repository: 'https://oauth2:${{ secrets.PERSONAL_TOKEN_2 }}@git.example.com/ort-project/ort-config.git'
           run: >
@@ -216,7 +219,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           repository: ${{ matrix.repository }}
-      - uses: oss-review-toolkit/ort-ci-github-action@v1
+      - uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           sw-name: ${{ matrix.sw-name }}
 ```
@@ -241,7 +244,7 @@ jobs:
         with:
           repository: 'jshttp/mime-types'
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           ort-config-repository: 'https://github.com/oss-review-toolkit/ort-config'
           ort-config-revision: 'e4ae8f0a2d0415e35d80df0f48dd95c90a992514'
@@ -259,7 +262,7 @@ jobs:
       - name: Checkout project
         uses: actions/checkout@v3
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           image: 'my-org/ort-images/ort:latest'
 ```
@@ -288,7 +291,7 @@ jobs:
           repository: 'jshttp/mime-types'
           ref: '2.1.35'
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           db-url: ${{ secrets.POSTGRES_URL }}
           db-username: ${{ secrets.POSTGRES_USERNAME }}
@@ -308,7 +311,7 @@ jobs:
       - name: Checkout project
         uses: actions/checkout@v3
       - name: Run GitHub Action for ORT
-        uses: oss-review-toolkit/ort-ci-github-action@v1
+        uses: oss-review-toolkit/ort-ci-github-action@main
         with:
           run: >
             cache-dependencies,
@@ -341,5 +344,6 @@ OSS Review Toolkit (ORT) is a [Linux Foundation project][lf] and part of [ACT][a
 [ort]: https://github.com/oss-review-toolkit/ort
 [ort-config-yml]: https://github.com/oss-review-toolkit/ort/blob/main/model/src/main/resources/reference.yml
 [ort-contributing-md]: https://github.com/oss-review-toolkit/.github/blob/main/CONTRIBUTING.md
+[ort-gh-action-tags]: https://github.com/oss-review-toolkit/ort-ci-github-action/tags
 [ort-slack]: http://slack.oss-review-toolkit.org
 [lf]: https://www.linuxfoundation.org