diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..62fe502
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,47 @@
+name: Build and Push
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+env:
+  IMAGE_NAME: ghcr.io/${{ github.repository }}
+  PDFTK_VERSION: "3.3.3"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=${{ env.PDFTK_VERSION }}
+
+      - uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
diff --git a/Dockerfile b/Dockerfile
index 10dac8e..498ad68 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,10 +2,10 @@ FROM alpine
 
 WORKDIR /app
 
-ENV PATH "$PATH:/app"
+ENV PATH="$PATH:/app"
 
-ARG OPENJDK_RELEASE=8
-ARG PDFTK_RELEASE=v3.0.6
+ARG OPENJDK_RELEASE=25
+ARG PDFTK_RELEASE=v3.3.3
 
 RUN set -x \
     && apk add \
@@ -21,7 +21,7 @@ RUN set -x \
          https://gitlab.com/pdftk-java/pdftk \
     && gradle --no-daemon --parallel --quiet --no-build-cache \
         -p pdftk shadowJar \
-    && mv pdftk/build/libs/pdftk.jar ./ \
+    && mv pdftk/build/libs/pdftk-all.jar ./pdftk.jar \
     && apk del .build-deps \
     && rm -rf \
         /root/.gradle \