diff --git a/src/providers/docker.ts b/src/providers/docker.ts
index 1d244bb7..0ee93ee4 100644
--- a/src/providers/docker.ts
+++ b/src/providers/docker.ts
@@ -50,7 +50,8 @@ export class ImageProvider implements IImageProvider {
      * @private
      */
     private replaceArgsInString(imageData: string): string {
-        return imageData.replace(/\${([^{}]+)}/g, (match, key) => {
+        return imageData.replace(/(\$\{([^{}]+)\}|\$([^{}]+))/g, (match, fullMatch, key1, key2) => {
+            const key = key1 || key2;
             const value = this.args.get(key) || '';
             return value;
         });
diff --git a/test/providers/docker.test.ts b/test/providers/docker.test.ts
index d0f6a899..2afa6558 100644
--- a/test/providers/docker.test.ts
+++ b/test/providers/docker.test.ts
@@ -190,13 +190,18 @@ FROM --platform=linux/amd64 alpine@sha256:c5b1261d6d3e43071626931fc004f70149baeb
         const deps = await dependencyProvider.collect(`
 ARG ARG_IMAGE=python
 ARG ARG_TAG=3.9.5
-FROM --platform=linux/amd64 \${ARG_IMAGE}:\${ARG_TAG} as stage1\${ARG_FAKE}
+FROM --platform=linux/amd64 \${ARG_IMAGE}:\${ARG_TAG} as stage1\$ARG_FAKE
+FROM \$ARG_IMAGE
         `);
         expect(deps).is.eql([
             {
                 name: {value: 'python:3.9.5', position: {line: 4, column: 0}},
-                line: 'FROM --platform=linux/amd64 ${ARG_IMAGE}:${ARG_TAG} as stage1${ARG_FAKE}',
+                line: 'FROM --platform=linux/amd64 ${ARG_IMAGE}:${ARG_TAG} as stage1$ARG_FAKE',
                 platform: 'linux/amd64'
+            },
+            {
+                name: {value: 'python', position: {line: 5, column: 0}},
+                line: 'FROM $ARG_IMAGE',
             }
         ]);
     });