diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 6ec4a8e..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,9 +0,0 @@
-FROM fedora:latest
-
-COPY ./entrypoint.sh /entrypoint.sh
-
-RUN dnf -y install rpmdevtools
-
-RUN rpmdev-setuptree
-
-ENTRYPOINT ["/entrypoint.sh"]
diff --git a/action.yml b/action.yml
index 16b82ee..80febf5 100644
--- a/action.yml
+++ b/action.yml
@@ -6,7 +6,25 @@ inputs:
     required: true
 
 runs:
-  using: "docker"
-  image: "Dockerfile"
-  args:
-    - ${{ inputs.spec-file-path }}
+  using: "composite"
+  steps:
+    - name: Setup workspace
+      shell: bash
+      env:
+        SPEC_FILE_PATH: ${{ inputs.spec-file-path }}
+      run: |
+        mkdir -p ./rpmbuild/{RPMS,SPECS}
+        cp ${SPEC_FILE_PATH} ./rpmbuild/SPECS
+
+    - name: Build RPM
+      shell: bash
+      env:
+        SPEC_FILE_PATH: ${{ inputs.spec-file-path }}
+      run: |
+        SPEC_FILE_NAME=$(basename ${SPEC_FILE_PATH})
+        podman run --rm \
+          -v ./rpmbuild:/root/rpmbuild:rw,z \
+          -v ./entrypoint.sh:/root/entrypoint.sh:ro,z \
+          -w /root \
+          fedora:latest \
+          /root/entrypoint.sh /root/rpmbuild/SPECS/${SPEC_FILE_NAME}
diff --git a/entrypoint.sh b/entrypoint.sh
index 8e18f3b..7b971ab 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,11 @@
-#!/bin/sh -l
+#!/usr/bin/env bash
 
-toolbox run rpmdev-spectool -g -C ~/rpmbuild/SOURCES $1
+dnf -y config-manager --add-repo https://git.hydrosaber.com/api/packages/hydros/rpm/f43.repo
+
+dnf -y install rpmdevtools
+rpmdev-setuptree
+
+dnf -y builddep $1
+
+rpmdev-spectool -g -C ~/rpmbuild/SOURCES $1
 rpmbuild --nodebuginfo --bb $1