*: normalize file paths in all cases

Author: aayushshah15

dist/index.js

@@ -108,10 +108,10 @@ export function getDockerfilePath(inputs: Inputs): string | null {
 
     if (inputs.file) {
       // If context is git context, just use the file path directly
-      dockerfilePath = context === Context.gitContext() ? inputs.file : joinNonOverlapping(context, inputs.file);
+      dockerfilePath = context === Context.gitContext() ? path.normalize(inputs.file) : joinNonOverlapping(context, inputs.file);
     } else if (inputs['dockerfile']) {
       // If context is git context, just use the dockerfile path directly
-      dockerfilePath = context === Context.gitContext() ? inputs['dockerfile'] : joinNonOverlapping(context, inputs['dockerfile']);
+      dockerfilePath = context === Context.gitContext() ? path.normalize(inputs['dockerfile']) : joinNonOverlapping(context, inputs['dockerfile']);
     } else {
       // If context is git context, just use 'Dockerfile'
       dockerfilePath = context === Context.gitContext() ? 'Dockerfile' : joinNonOverlapping(context, 'Dockerfile');
@@ -126,7 +126,7 @@ export function getDockerfilePath(inputs: Inputs): string | null {
       }
       return dockerfilePath;
     } catch (statError) {
-      core.warning(`Dockerfile not found at path: ${dockerfilePath}`);
+      core.warning(`Dockerfile not found at path: ${dockerfilePath}; error: ${statError?.message}`);
       return null;
     }
   } catch (error) {