diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3c5e36d..f0d5cc4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -36,8 +36,13 @@ jobs:
             This is sample package.
 
             This is sample package.
+        id: build
       - run: |
           docker run --rm -v $PWD:/work -t centos:7 bash -c 'rpm -Uvh /work/*.rpm && testbin'
+      - name: Test file_name
+        run: test ${{ steps.build.outputs.file_name }} = 'testbin-1.0.0-1.el7.x86_64.rpm'
+      - name: Test debuginfo_file_name
+        run: test ${{ steps.build.outputs.debuginfo_file_name }} = 'testbin-debuginfo-1.0.0-1.el7.x86_64.rpm'
 
   test-script-version:
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index b50fe59..3399455 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,16 @@ inputs:
  
 ```
 
+## Output
+
+```yaml
+outputs:
+  file_name:
+    description: 'File name of resulting .rpm file. This does not contain a debuginfo file.'
+  debuginfo_file_name:
+    description: 'File name of resulting .rpm debuginfo file.'
+```
+
 ## Usage
 
 ```yaml
diff --git a/action.yml b/action.yml
index 6f0c554..3ef7d71 100644
--- a/action.yml
+++ b/action.yml
@@ -32,9 +32,14 @@ inputs:
   post:
     description: 'Package post.'
     default: ''
+outputs:
+  file_name:
+    description: 'File name of resulting .rpm file. This does not contain a debuginfo file.'
+  debuginfo_file_name:
+    description: 'File name of resulting .rpm debuginfo file.'
 runs:
   using: 'docker'
-  image: 'docker://jiro4989/build-rpm-action:2.3.0'
+  image: 'docker://jiro4989/build-rpm-action:2.4.0'
 
 # Ref: https://haya14busa.github.io/github-action-brandings/
 # TODO: update branding if you want.
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..a1477c4
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -eu
+
+version=$1
+tag="jiro4989/build-rpm-action:$version"
+docker build --no-cache -t "$tag" .
+docker push "$tag"
diff --git a/entrypoint.sh b/entrypoint.sh
index 7a0b4fc..bae2c81 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -44,3 +44,21 @@ readonly RPMBUILD_SPEC_DIR="$RPMBUILD_DIR/SPECS"
 cp -p "$RPMBUILD_DIR/RPMS/$(uname -m)"/*.rpm .
 
 ls -lah ./*.rpm
+
+# for grep
+set +e
+
+for f in *.rpm; do
+  # exclude debuginfo file
+  line_count="$(echo "$f" | grep -Eoc "^${INPUT_PACKAGE}-debuginfo-")"
+  if [ "$line_count" -ne 0 ]; then
+    RPM_DEBUGINFO_FILE="$f"
+    continue
+  fi
+  RPM_FILE="$f"
+done
+
+set -e
+
+echo "file_name=$RPM_FILE" >> "${GITHUB_OUTPUT}"
+echo "debuginfo_file_name=$RPM_DEBUGINFO_FILE" >> "${GITHUB_OUTPUT}"