v1

action.yml

@@ -0,0 +1,35 @@
+name: Get docker image environement variable
+description: get a environement variable value from a docker image
+inputs:
+  image:
+    description: "Image"
+    required: true
+  registry:
+    description: "Registry"
+    required: false
+  username:
+    description: "Username"
+    required: false
+  password:
+    description: "Password"
+    required: false
+  name:
+    description: "Environement variable's name"
+    required: true
+outputs:
+  value:
+    description: "The environement variable's value"
+    value: ${{steps.worker.outputs.value}}
+
+runs:
+  using: composite
+  steps:
+    - name: worker
+      id: worker
+      uses: addnab/docker-run-action@v3
+      with:
+        image: ${{inputs.image}}
+        registry: ${{inputs.registry}}
+        username: ${{inputs.username}}
+        password: ${{inputs.password}}
+        run: echo "::set-output name=value::${${{inputs.name}}}"