diff --git a/.github/workflows/simple.yaml b/.github/workflows/simple.yaml
index d2b2222..e1fe22b 100644
--- a/.github/workflows/simple.yaml
+++ b/.github/workflows/simple.yaml
@@ -1,8 +1,12 @@
 name: shell commands 
-on : [push]
+on : [pull_request]
+
 jobs:
     run-shell-command:
+        
         runs-on: ubuntu-latest
+        env: 
+          working : ${{ github.base_ref }}
         steps:
             - name: echo string 
               run : echo "hello world"
@@ -10,6 +14,7 @@ jobs:
               run : |
                   node -v 
                   npm -v 
+                  echo $working
             - name : python command 
               run : |
                   import platform
diff --git a/.github/workflows/actions.yaml b/all-work-flows/actions.yaml
similarity index 100%
rename from .github/workflows/actions.yaml
rename to all-work-flows/actions.yaml
diff --git a/all-work-flows/container.yaml b/all-work-flows/container.yaml
new file mode 100644
index 0000000..736d4b0
--- /dev/null
+++ b/all-work-flows/container.yaml
@@ -0,0 +1,13 @@
+name : run docker container in work flow 
+#here all our steps of the job will run in container instead of VM directly 
+on : [push]
+jobs:
+  node-docker:
+    runs-on: ubuntu-latest
+    container: 
+      image: node:13.5.0-alpine3.10
+    steps:
+      - name : log node version
+        run : |
+          node -v 
+          cat /etc/os-release
\ No newline at end of file
diff --git a/all-work-flows/env.yaml b/all-work-flows/env.yaml
new file mode 100644
index 0000000..111fdb7
--- /dev/null
+++ b/all-work-flows/env.yaml
@@ -0,0 +1,30 @@
+name: env virables workflow
+on : push
+env: 
+  WF_ENV : Available to all jobs
+jobs:
+  log-env: 
+    runs-on: ubuntu-latest
+    env : 
+      JOB_ENV : Availabe in log env job
+    steps:
+      - name : Log env variables
+        env:
+          STEP_ENV : Available only in step 
+        run: |
+          echo "WF_ENV:${WF_ENV}"
+          echo "JOB_ENV:${JOB_ENV}"
+          echo "STEP_ENV:${STEP_ENV}"
+      - name : log 2 step
+        run : |
+          echo "WF_ENV:${WF_ENV}"
+          echo "JOB_ENV:${JOB_ENV}"
+          echo "STEP_ENV:${STEP_ENV}"
+  log2-env:
+    runs-on : ubuntu-latest
+    steps:
+      - name: test access envs 
+        run : |
+          echo "WF_ENV:${WF_ENV}"
+          echo "JOB_ENV:${JOB_ENV}"
+          echo "STEP_ENV:${STEP_ENV}"
diff --git a/all-work-flows/matrix.yaml b/all-work-flows/matrix.yaml
new file mode 100644
index 0000000..873badc
--- /dev/null
+++ b/all-work-flows/matrix.yaml
@@ -0,0 +1,32 @@
+name : matrix workflow
+on : [pull_request]
+jobs:
+  node-version:
+    strategy:
+      matrix:
+        node_version: [6,7,8]
+        os_type: [ubuntu-latest, windows-latest]
+        exclude: 
+          - os_type: ubuntu-latest
+            node_version: 6
+          - os_type: windows-latest
+            node_version: 8
+        include:
+          - os_type : ubuntu-latest
+            node_version: 7
+            is_ubuntu: "true"
+          
+    runs-on : ${{matrix.os_type}}
+    env:
+      IS_UBUNTU_7: ${{matrix.is_ubuntu}}
+    steps :
+      - name: node version original 
+        run : node -v 
+      - name : changing node version 
+        uses : actions/setup-node@v2
+        with : 
+          node-version: ${{matrix.node_version}}
+      - name: node version after modification
+        run : |
+          node -v 
+          echo "IS_UBUNTU_7:"$IS_UBUNTU_7
diff --git a/test b/test
new file mode 100644
index 0000000..e69de29