run frontend workflow only on push

run all other workflows on push and on PRs from external repos

This should prevent running workflows twice in case of a PR from a
branch of the main repo

.github/workflows/backend-tests.yml

@@ -5,6 +5,11 @@ on: [push, pull_request]
 
 jobs:
   withoutplugins:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: without plugins
     runs-on: ubuntu-latest
 
@@ -26,6 +31,11 @@ jobs:
       run: tests/frontend/travis/runnerBackend.sh
 
   withplugins:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: with Plugins
     runs-on: ubuntu-latest
 

.github/workflows/dockerfile.yml

@@ -5,6 +5,11 @@ on: [push, pull_request]
 
 jobs:
   dockerfile:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: build image and run connectivity test
     runs-on: ubuntu-latest
 

.github/workflows/frontend-tests.yml

@@ -1,12 +1,9 @@
 name: "Frontend tests"
 
-# any branch is useful for testing before a PR is submitted
+on: [push]
-on: [push, pull_request]
 
 jobs:
   withoutplugins:
-    # don't run on PRs from forks
-    if: github.event.pull_request.head.repo.full_name == 'ether/etherpad-lite' || github.event_name == 'push'
     name: without plugins
     runs-on: ubuntu-latest
 
@@ -43,8 +40,6 @@ jobs:
         tests/frontend/travis/runner.sh
 
   withplugins:
-    # don't run on PRs from forks
-    if: github.event.pull_request.head.repo.full_name == 'ether/etherpad-lite' || github.event_name == 'push'
     name: with plugins
     runs-on: ubuntu-latest
 

.github/workflows/lint-package-lock.yml

@@ -5,6 +5,11 @@ on: [push, pull_request]
 
 jobs:
   lint-package-lock:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: package-lock.json
     runs-on: ubuntu-latest
 

.github/workflows/load-test.yml

@@ -5,6 +5,11 @@ on: [push, pull_request]
 
 jobs:
   withoutplugins:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: without plugins
     runs-on: ubuntu-latest
 
@@ -22,6 +27,11 @@ jobs:
       run: tests/frontend/travis/runnerLoadTest.sh
 
   withplugins:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: with Plugins
     runs-on: ubuntu-latest
 

.github/workflows/rate-limit.yml

@@ -5,6 +5,11 @@ on: [push, pull_request]
 
 jobs:
   ratelimit:
+    # run on pushes to any branch
+    # run on PRs from external forks
+    if: |
+         (github.event_name != 'pull_request')
+         || (github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id)
     name: test
     runs-on: ubuntu-latest
     steps: