diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
new file mode 100644
index 0000000..d657a63
--- /dev/null
+++ b/.github/workflows/docker-image.yml
@@ -0,0 +1,18 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
diff --git a/main.cpp b/main.cpp
index 31b9b81..a6b99d3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -18,9 +18,16 @@ int main(){
         if( input.size() != RGB_HEX_LENGTH ){
             cout << "Please enter the color in hexadecimal format, starting with # followed by six hex values\n";
         }
-    }while( input.size() != RGB_HEX_LENGTH );
+	//Check if input is # using ASCII value
+	if (input[0] != 35)
+	{
+		cout << "Please enter the color in hexadecimal format, starting with # followed by six hex values\n";
+    }	
+    }
+	//Check if input is appropriate size then output response
+	while( input.size() == RGB_HEX_LENGTH );
 
     cout << "Your hex color is: " << input << endl;
 
     return 0;
-}
\ No newline at end of file
+}