diff --git a/.github/docker/Dockerfile_debian-bookworm b/.github/docker/Dockerfile_debian-bookworm
deleted file mode 100644
index b3ee3e7..0000000
--- a/.github/docker/Dockerfile_debian-bookworm
+++ /dev/null
@@ -1,40 +0,0 @@
-FROM hexpm/elixir:1.15.4-erlang-26.0.2-debian-bookworm-20230612-slim
-
-USER root
-
-RUN apt-get update \
-  && apt-get install -y --no-install-recommends \
-    chromium \
-    chromium-sandbox \
-    # Will install ghostscript 9.53
-    ghostscript \
-    # for verapdf & ZUV
-    openjdk-17-jre \
-    # for pdftotext & friends
-    poppler-utils \
-    # for identifying images
-    imagemagick \
-    # for 'kill'
-    procps \
-    # temporary for installation below
-    wget \
-    unzip
-
-RUN mkdir /opt/verapdf
-WORKDIR /opt/verapdf
-RUN wget http://downloads.verapdf.org/rel/verapdf-installer.zip \
-  && unzip verapdf-installer.zip \
-  && mv verapdf-greenfield* verapdf-greenfield \
-  && chmod +x verapdf-greenfield/verapdf-install
-COPY .github/docker/auto-install.xml /opt/verapdf/verapdf-greenfield
-RUN ./verapdf-greenfield/verapdf-install auto-install.xml
-
-WORKDIR /opt/zuv
-RUN wget https://github.com/ZUGFeRD/ZUV/releases/download/v0.8.3/ZUV-0.8.3.jar
-ENV ZUV_JAR /opt/zuv/ZUV-0.8.3.jar
-
-RUN apt-get remove -y \
-    wget \
-    unzip \
-  && apt-get autoremove -y \
-	&& rm -rf /var/lib/apt/lists/*
diff --git a/.github/docker/Dockerfile_debian-bullseye b/.github/docker/Dockerfile_debian-bullseye
deleted file mode 100644
index eb63aaf..0000000
--- a/.github/docker/Dockerfile_debian-bullseye
+++ /dev/null
@@ -1,40 +0,0 @@
-FROM hexpm/elixir:1.14.0-erlang-25.1-debian-bullseye-20220801
-
-USER root
-
-RUN apt-get update \
-  && apt-get install -y --no-install-recommends \
-    chromium \
-    chromium-sandbox \
-    # Will install ghostscript 9.53
-    ghostscript \
-    # for verapdf & ZUV
-    openjdk-11-jre \
-    # for pdftotext & friends
-    poppler-utils \
-    # for identifying images
-    imagemagick \
-    # for 'kill'
-    procps \
-    # temporary for installation below
-    wget \
-    unzip
-
-RUN mkdir /opt/verapdf
-WORKDIR /opt/verapdf
-RUN wget http://downloads.verapdf.org/rel/verapdf-installer.zip \
-  && unzip verapdf-installer.zip \
-  && mv verapdf-greenfield* verapdf-greenfield \
-  && chmod +x verapdf-greenfield/verapdf-install
-COPY .github/docker/auto-install.xml /opt/verapdf/verapdf-greenfield
-RUN ./verapdf-greenfield/verapdf-install auto-install.xml
-
-WORKDIR /opt/zuv
-RUN wget https://github.com/ZUGFeRD/ZUV/releases/download/v0.8.3/ZUV-0.8.3.jar
-ENV ZUV_JAR /opt/zuv/ZUV-0.8.3.jar
-
-RUN apt-get remove -y \
-    wget \
-    unzip \
-  && apt-get autoremove -y \
-	&& rm -rf /var/lib/apt/lists/*
diff --git a/.github/workflows/publish-image.yml b/.github/workflows/publish-image.yml
index 45647fe..aa78d08 100644
--- a/.github/workflows/publish-image.yml
+++ b/.github/workflows/publish-image.yml
@@ -11,12 +11,13 @@
 
 name: Create and publish a Docker image to Github Packages
 
-on:
-  push:
-    branches: ['main']
-    paths:
-    - ".github/workflows/publish-image.yml"
-    - ".github/docker/*"
+on: [pull_request]
+#on:
+#  push:
+#    branches: ['main']
+#    paths:
+#    - ".github/workflows/publish-image.yml"
+#    - ".github/docker/*"
 
 env:
   REGISTRY: ghcr.io
@@ -31,21 +32,30 @@ jobs:
       packages: write
     strategy:
       matrix:
-        dockerfile: ['elixir-1-11', 'debian-buster', 'debian-bullseye', 'debian-bookworm', 'alpine-3-16-2', 'alpine-3-17-3', 'alpine-3-18-4']
+        dockerfile: ['elixir-1-11', 'debian-buster', 'alpine-3-16-2', 'alpine-3-17-3', 'alpine-3-18-4']
 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - uses: dorny/paths-filter@v2
+        id: paths-filter
+        with:
+          filters: |
+            dockerfile:
+              - .github/docker/Dockerfile_${{matrix.dockerfile}}
+
       - name: Log in to the Container registry
-        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        if: steps.paths-filter.outputs.dockerfile == 'true'
+        uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        if: steps.paths-filter.outputs.dockerfile == 'true'
+        uses: docker/build-push-action@v5
         with:
           context: .
           file: .github/docker/Dockerfile_${{matrix.dockerfile}}
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1196bd2..c4f6ff4 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -5,7 +5,7 @@ jobs:
     name: ${{ matrix.tag }}
     strategy:
       matrix:
-        tag: ['elixir-1-11', 'debian-buster', 'debian-bullseye', 'debian-bookworm', 'alpine-3-16-2', 'alpine-3-17-3', 'alpine-3-18-4']
+        tag: ['elixir-1-11', 'debian-buster', 'alpine-3-16-2', 'alpine-3-17-3', 'alpine-3-18-4']
     env:
       MIX_ENV: test
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 08ed535..df8339d 100644
--- a/README.md
+++ b/README.md
@@ -27,8 +27,6 @@ ChromicPDF is tested in the following configurations:
 | 1.15.7 | 26.2       | Alpine 3.18     | 119.0.6045.159  | 10.02.0     |
 | 1.14.5 | 25.3.1     | Alpine 3.17     | 112.0.5615.165  | 10.01.1     |
 | 1.14.0 | 25.1       | Alpine 3.16     | 102.0.5005.182  | 9.56.1      |
-| 1.15.4 | 26.0.2     | Debian Bookworm | 115.0.5790.170  | 10.00.0     |
-| 1.14.0 | 25.1       | Debian Bullseye | 108.0.5359.94   | 9.53.3      |
 | 1.14.0 | 25.1       | Debian Buster   | 90.0.4430.212-1 | 9.27        |
 | 1.11.4 | 22.3.4.26  | Debian Buster   | 90.0.4430.212-1 | 9.27        |