diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml
index 065c4bb..bfdf521 100644
--- a/.github/workflows/build-and-publish.yml
+++ b/.github/workflows/build-and-publish.yml
@@ -16,20 +16,17 @@ jobs:
   build:
     strategy:
       matrix:
-        postgres_version: [13, 14, 15, 16, 17]
+        postgres_version: [14, 15, 16, 17]
         major: [4,5]
         include:
           - partman_version: v4.7.4
             partman_checksum: 28e4fdb83ecc16525959ae9593bfbfd077db429285f5f7d8e2468bfff6cbdbf2c81ace79a9ddeb4f00f51eb709163dbd713fe6b221a432ac2ff766f98d4cf8e4
-            default: "true"
+            default: "false"
             major: 4
           - partman_version: v5.2.4
             partman_checksum: 8328a00ce1a55a5c9173d4adbf251e784fed62413fb76bba89dd893749a720a5ecb25ee668eb0b826b8e1f2b89d9dd7da219fd797bfd9ab1a43d05f5b3ac494f
-            default: "false"
+            default: "true"
             major: 5
-        exclude:
-          - major: 5
-            postgres_version: 13 # partman 5.x does not support postgres 13
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -63,7 +60,7 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=raw,value=latest,enable=${{ matrix.postgres_version == '15' && matrix.default == 'true' }}
+            type=raw,value=latest,enable=${{ matrix.postgres_version == '17' && matrix.default == 'true' }}
             type=raw,value=${{ matrix.postgres_version }},enable=${{ matrix.default == 'true'}}
             ${{ matrix.postgres_version }}-${{ matrix.major }}
 
diff --git a/Dockerfile b/Dockerfile
index 3d97f60..4c94673 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-ARG POSTGRESQL_VERSION="16"
+ARG POSTGRESQL_VERSION="17"
 ARG JOBMON_VERSION="v1.4.1"
 ARG PARTMAN_VERSION="v5.2.4"
 
-FROM bitnami/postgresql:$POSTGRESQL_VERSION AS builder
+FROM postgres:$POSTGRESQL_VERSION-alpine AS builder
 LABEL org.opencontainers.image.source="https://github.com/dbsystel/postgresql-partman-container"
 ARG JOBMON_VERSION
 LABEL de.dbsystel.jobmon-version=$JOBMON_VERSION
@@ -14,24 +14,21 @@ ARG JOBMON_CHECKSUM="db67c068ecdc136305eafb25bd8fc737f6b9944d4ef3d59ecf700693368
 ARG PARTMAN_CHECKSUM="8328a00ce1a55a5c9173d4adbf251e784fed62413fb76bba89dd893749a720a5ecb25ee668eb0b826b8e1f2b89d9dd7da219fd797bfd9ab1a43d05f5b3ac494f"
 USER root
 
-RUN install_packages wget gcc make build-essential \
-    && export C_INCLUDE_PATH=/opt/bitnami/postgresql/include/:/opt/bitnami/common/include/ \
-    && export LIBRARY_PATH=/opt/bitnami/postgresql/lib/:/opt/bitnami/common/lib/ \
-    && export LD_LIBRARY_PATH=/opt/bitnami/postgresql/lib/:/opt/bitnami/common/lib/
+RUN apk add --no-cache wget gcc make musl-dev postgresql-dev $DOCKER_PG_LLVM_DEPS
 
 RUN wget "https://github.com/omniti-labs/pg_jobmon/archive/refs/tags/${JOBMON_VERSION}.tar.gz" \
-    && echo "${JOBMON_CHECKSUM} ${JOBMON_VERSION}.tar.gz" | sha512sum --check \
+    && echo "${JOBMON_CHECKSUM}  ${JOBMON_VERSION}.tar.gz" | sha512sum -c \
     && tar zxf ${JOBMON_VERSION}.tar.gz && cd pg_jobmon-${JOBMON_VERSION#v}\
     && make \
     && make install
 
 RUN wget "https://github.com/pgpartman/pg_partman/archive/refs/tags/${PARTMAN_VERSION}.tar.gz" \
-    && echo "${PARTMAN_CHECKSUM} ${PARTMAN_VERSION}.tar.gz" | sha512sum --check \
+    && echo "${PARTMAN_CHECKSUM}  ${PARTMAN_VERSION}.tar.gz" | sha512sum -c \
     && tar zxf ${PARTMAN_VERSION}.tar.gz && cd pg_partman-${PARTMAN_VERSION#v}\
     && make \
     && make install
 
-FROM bitnami/postgresql:$POSTGRESQL_VERSION
+FROM postgres:$POSTGRESQL_VERSION-alpine
 LABEL org.opencontainers.image.source="https://github.com/dbsystel/postgresql-partman-container"
 ARG JOBMON_VERSION
 LABEL de.dbsystel.jobmon-version=$JOBMON_VERSION
@@ -40,8 +37,9 @@ LABEL de.dbsystel.partman-version=$PARTMAN_VERSION
 ARG POSTGRESQL_VERSION
 LABEL de.dbsystel.postgres-version=$POSTGRESQL_VERSION
 
-COPY --from=builder pg_jobmon-${JOBMON_VERSION#v}/sql/pg_jobmon--${JOBMON_VERSION#v}.sql pg_jobmon-${JOBMON_VERSION#v}/pg_jobmon.control pg_partman-${PARTMAN_VERSION#v}/sql/pg_partman--${PARTMAN_VERSION#v}.sql pg_partman-${PARTMAN_VERSION#v}/pg_partman.control /opt/bitnami/postgresql/share/extension/
-COPY --from=builder /opt/bitnami/postgresql/lib/pg_partman_bgw.so /opt/bitnami/postgresql/lib/pg_partman_bgw.so
-COPY --from=builder pg_partman-${PARTMAN_VERSION#v}/bin/common/* /opt/bitnami/lib/postgresql/bin/
+COPY --from=builder /usr/local/share/postgresql/extension/pg_jobmon* /usr/local/share/postgresql/extension/
+COPY --from=builder /usr/local/share/postgresql/extension/pg_partman* /usr/local/share/postgresql/extension/
+COPY --from=builder /usr/local/lib/postgresql/pg_partman_bgw.so /usr/local/lib/postgresql/
+COPY --from=builder pg_partman-*/bin/common/* /usr/local/bin/
 
-USER 1001
+USER postgres
diff --git a/README.md b/README.md
index 920101f..3b68a8e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # PostgreSQL container image with pg_partman
 
-This repo is meant to provide an OCI (Docker) container image that is based on the popular [bitnami/postgresql](https://hub.docker.com/r/bitnami/postgresql) image, that comes preinstalled with the [pg_partman](https://github.com/pgpartman/pg_partman) and [pg_jobmon](https://github.com/omniti-labs/pg_jobmon) PostgreSQL extensions.
+This repo is meant to provide an OCI (Docker) container image that is based on the official [postgres](https://hub.docker.com/_/postgres) image in the alpine variant, that comes preinstalled with the [pg_partman](https://github.com/pgpartman/pg_partman) and [pg_jobmon](https://github.com/omniti-labs/pg_jobmon) PostgreSQL extensions.
 
 It pushes a nightly latest image of all tag versions to [ghcr.io](https://github.com/orgs/dbsystel/packages/container/package/postgresql-partman)
 
@@ -8,8 +8,8 @@ It pushes a nightly latest image of all tag versions to [ghcr.io](https://github
 
 ```shell
 docker run ghcr.io/dbsystel/postgresql-partman
-docker run ghcr.io/dbsystel/postgresql-partman:{13,14,15,16,17}
-docker run ghcr.io/dbsystel/postgresql-partman:{13-4,14-4,15-4,16-4,17-4}
+docker run ghcr.io/dbsystel/postgresql-partman:{14,15,16,17}
+docker run ghcr.io/dbsystel/postgresql-partman:{14-4,15-4,16-4,17-4}
 docker run ghcr.io/dbsystel/postgresql-partman:{14-5,15-5,16-5,17-5}
 ```
 
@@ -17,13 +17,25 @@ The first part of the tag represents the PostgreSQL major version, the second pa
 
 You can find out the actual versions used by looking at the labels of an image.
 
-`docker inspect ghcr.io/dbsystel/postgresql-partman:13`
+`docker inspect ghcr.io/dbsystel/postgresql-partman:17`
 
 ````
-  "de.dbsystel.partman-version" : "v4.7.4",
-  "de.dbsystel.postgres-version" : "13",
+  "de.dbsystel.partman-version" : "v5.2.4",
+  "de.dbsystel.postgres-version" : "17",
 ````
 
+## Development
+
+### test-build.sh
+
+The `test-build.sh` script builds all PostgreSQL and partman version combinations locally for testing purposes. It extracts version information from the GitHub workflow to ensure consistency.
+
+```shell
+./test-build.sh
+```
+
+This builds Docker images for all supported PostgreSQL versions with both partman v4 and v5, tagged as `test-partman:{pg_version}-{partman_major}`.
+
 ## License
 
 This project is licensed under the Apache-2.0 license, see [LICENSE](LICENSE).
diff --git a/test-build.sh b/test-build.sh
new file mode 100755
index 0000000..74df922
--- /dev/null
+++ b/test-build.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Test build script for all PostgreSQL versions and partman combinations
+# Extracts versions and checksums from GitHub workflow to stay DRY
+
+set -e
+
+# Extract data from workflow file
+WORKFLOW_FILE=".github/workflows/build-and-publish.yml"
+
+# Parse PostgreSQL versions
+POSTGRES_VERSIONS=($(yq '.jobs.build.strategy.matrix.postgres_version[]' $WORKFLOW_FILE))
+
+# Parse partman versions and checksums
+PARTMAN_V4_VERSION=$(yq '.jobs.build.strategy.matrix.include[] | select(.major == 4) | .partman_version' $WORKFLOW_FILE)
+PARTMAN_V4_CHECKSUM=$(yq '.jobs.build.strategy.matrix.include[] | select(.major == 4) | .partman_checksum' $WORKFLOW_FILE)
+PARTMAN_V5_VERSION=$(yq '.jobs.build.strategy.matrix.include[] | select(.major == 5) | .partman_version' $WORKFLOW_FILE)
+PARTMAN_V5_CHECKSUM=$(yq '.jobs.build.strategy.matrix.include[] | select(.major == 5) | .partman_checksum' $WORKFLOW_FILE)
+
+for pg_version in "${POSTGRES_VERSIONS[@]}"; do
+    echo "Building PostgreSQL $pg_version with partman v5..."
+    docker build \
+        --build-arg POSTGRESQL_VERSION=$pg_version \
+        --build-arg PARTMAN_VERSION=$PARTMAN_V5_VERSION \
+        --build-arg PARTMAN_CHECKSUM=$PARTMAN_V5_CHECKSUM \
+        -t test-partman:$pg_version-5 .
+
+    echo "Building PostgreSQL $pg_version with partman v4..."
+    docker build \
+        --build-arg POSTGRESQL_VERSION=$pg_version \
+        --build-arg PARTMAN_VERSION=$PARTMAN_V4_VERSION \
+        --build-arg PARTMAN_CHECKSUM=$PARTMAN_V4_CHECKSUM \
+        -t test-partman:$pg_version-4 .
+done
+
+echo "All builds completed successfully!"