Do not run CI on forked repos (#1681)

Author: janeyx99

.github/workflows/build_docs.yaml

@@ -21,6 +21,7 @@ defaults:
 
 jobs:
   build_docs:
+    if: github.repository_owner == 'pytorch'
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -57,7 +58,7 @@ jobs:
   doc-preview:
     runs-on: [self-hosted, linux.2xlarge]
     needs: build_docs
-    if: ${{ github.event_name == 'pull_request' }}
+    if: ${{ github.repository_owner == 'pytorch' && github.event_name == 'pull_request' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -82,7 +83,7 @@ jobs:
   upload:
     runs-on: ubuntu-latest
     needs: build_docs
-    if: github.repository == 'pytorch/torchtune' && github.event_name == 'push' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
+    if: github.repository_owner == 'pytorch' && github.event_name == 'push' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
     environment: ${{ (github.ref == 'refs/heads/main' || startsWith(github.event.ref, 'refs/tags/v')) && 'docs-push' || '' }}
     steps:
       - name: Checkout

.github/workflows/build_linux_wheels.yaml

@@ -17,6 +17,7 @@ permissions:
 
 jobs:
   generate-matrix:
+    if: github.repository_owner == 'pytorch'
     uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
     with:
       package-type: wheel

.github/workflows/gpu_test.yaml

@@ -23,6 +23,7 @@ defaults:
 
 jobs:
   gpu_test:
+    if: github.repository_owner == 'pytorch'
     runs-on: linux.8xlarge.nvidia.gpu
     strategy:
       matrix:

.github/workflows/lint.yaml

@@ -15,6 +15,7 @@ defaults:
 
 jobs:
   lint:
+    if: github.repository_owner == 'pytorch'
     runs-on: ubuntu-latest
     strategy:
       matrix:

.github/workflows/recipe_test.yaml

@@ -21,6 +21,7 @@ defaults:
 
 jobs:
   recipe_test:
+    if: github.repository_owner == 'pytorch'
     runs-on: ubuntu-latest
     strategy:
       matrix:

.github/workflows/regression_test.yaml

@@ -19,6 +19,7 @@ defaults:
 
 jobs:
   regression_test:
+    if: github.repository_owner == 'pytorch'
     runs-on: linux.g5.12xlarge.nvidia.gpu
     strategy:
       matrix:

.github/workflows/unit_test.yaml

@@ -15,6 +15,7 @@ defaults:
 
 jobs:
   unit_tests:
+    if: github.repository_owner == 'pytorch'
     runs-on: ubuntu-latest
     strategy:
       matrix: