diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 9cc50ba..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,7 +0,0 @@
-FROM alpine:3.13.6
-
-RUN apk add --no-cache curl
-
-COPY entrypoint.sh /entrypoint.sh
-
-ENTRYPOINT ["/entrypoint.sh"]
\ No newline at end of file
diff --git a/action.yml b/action.yml
index 5e752e0..d4c9ff7 100644
--- a/action.yml
+++ b/action.yml
@@ -19,10 +19,21 @@ inputs:
 outputs:
   sarif-report-path:
     description: 'Path to the SARIF report generated. Relative to the GitHub workspace'
+    value: ${{ steps.scan-to-sarif.outputs.sarif-report-path }}
 runs:
-  using: 'docker'
-  image: 'Dockerfile'
-  args:
-    - ${{ inputs.converter-version }}
-    - ${{ inputs.input-file }}
-    - ${{ inputs.output-file }}
+  using: "composite"
+  steps:
+    - id: container-scan-to-sarif-downloader
+      run: |
+        mkdir -p ~/.local/bin
+        curl -L "https://github.com/rm3l/container-scan-to-sarif/releases/download/${{ inputs.converter-version }}/container-scan-to-sarif_${{ inputs.converter-version }}_Linux_x86_64.tar.gz" \
+          | tar zx -C ~/.local/bin
+        chmod +x ~/.local/bin/container-scan-to-sarif
+      shell: bash
+    - id: scan-to-sarif
+      run: |
+        ~/.local/bin/container-scan-to-sarif \
+          -input "${{ inputs.input-file }}" \
+          -output "${{ inputs.output-file }}"
+        echo "::set-output name=sarif-report-path::${{ inputs.output-file }}"
+      shell: bash
diff --git a/entrypoint.sh b/entrypoint.sh
deleted file mode 100755
index b8216a9..0000000
--- a/entrypoint.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/sh -l
-
-CONTAINER_SCAN_TO_SARIF_VERSION="$1"
-echo "Installing container-scan-to-sarif (version $CONTAINER_SCAN_TO_SARIF_VERSION)..."
-curl -L "https://github.com/rm3l/container-scan-to-sarif/releases/download/${CONTAINER_SCAN_TO_SARIF_VERSION}/container-scan-to-sarif_${CONTAINER_SCAN_TO_SARIF_VERSION}_Linux_x86_64.tar.gz" \
-  | tar zx -C /usr/local/bin/ || exit 1
-chmod +x /usr/local/bin/container-scan-to-sarif
-
-INPUT="$2"
-echo "Now running container-scan-to-sarif against file $INPUT..."
-OUTPUT_FILE="$2"
-/usr/local/bin/container-scan-to-sarif -input "$INPUT" -output "$OUTPUT_FILE" || exit 1
-echo "::set-output name=sarif-report-path::$OUTPUT_FILE"