diff --git a/tests/dockerfiles/Python-alpine.Dockerfile b/tests/dockerfiles/Python-alpine.Dockerfile
new file mode 100644
index 0000000..3c8317b
--- /dev/null
+++ b/tests/dockerfiles/Python-alpine.Dockerfile
@@ -0,0 +1,24 @@
+FROM python:3.13-alpine AS target
+FROM interdiode/id-configurator:latest AS configuration
+COPY --from=target / /src/
+COPY --from=generated-config Python.yaml /config.yaml
+RUN id-configurator apply --config /config.yaml --src /src --dst /dst
+FROM target AS runtime
+ARG PYPI_REPO_PORT
+# Warm up uv and poetry themselves from the real, network-reachable PyPI
+# while the default index is still in place, so the actual tests below
+# never need anything but the fixture repository configured by
+# id-configurator. (easy_install/distutils, the fourth tool the `python`
+# module configures, is not exercised here: both were removed from Python
+# itself in 3.12, and setuptools no longer ships easy_install either, so
+# there is no way to actually invoke it on a current interpreter.)
+RUN pip install --no-cache-dir uv poetry
+COPY --from=configuration /dst/ /
+RUN pip install --no-cache-dir idconfiguratortestpkg \
+    && python3 -c "import idconfiguratortestpkg"
+RUN uv pip install --system idconfiguratortestpkg \
+    && python3 -c "import idconfiguratortestpkg"
+RUN mkdir -p /tmp/poetrytest && cd /tmp/poetrytest \
+    && poetry init -n --name poetrytest \
+    && poetry source add --priority explicit demo "https://host.docker.internal:${PYPI_REPO_PORT}/simple/" \
+    && poetry add idconfiguratortestpkg --source demo
diff --git a/tox.ini b/tox.ini
index 3c24543..ded91d4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -78,7 +78,10 @@ allowlist_externals =
     docker
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Python.yaml.j2 {env_dir}/configs/Python.yaml
+    docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-arg PYPI_REPO_PORT={env:PYPI_REPO_PORT} --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Python-alpine.Dockerfile -t id-configurator-python .
+    docker rmi id-configurator-python
     docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-arg PYPI_REPO_PORT={env:PYPI_REPO_PORT} --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Python.Dockerfile -t id-configurator-python .
+    docker rmi id-configurator-python
 
 [docker:apt-repo]
 dockerfile = {tox_root}/tests/dockerfiles/repos/apt-repo.Dockerfile
@@ -101,6 +104,7 @@ allowlist_externals =
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Apt.yaml.j2 {env_dir}/configs/Apt.yaml
     docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Apt.Dockerfile -t id-configurator-apt .
+    docker rmi id-configurator-apt
 
 [docker:yum-repo]
 dockerfile = {tox_root}/tests/dockerfiles/repos/yum-repo.Dockerfile
@@ -123,6 +127,7 @@ allowlist_externals =
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Yum.yaml.j2 {env_dir}/configs/Yum.yaml
     docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Yum.Dockerfile -t id-configurator-yum .
+    docker rmi id-configurator-yum
 
 [docker:apk-repo]
 dockerfile = {tox_root}/tests/dockerfiles/repos/apk-repo.Dockerfile
@@ -154,6 +159,7 @@ description =
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Apk.yaml.j2 {env_dir}/configs/Apk.yaml
     docker buildx build --add-host=host.docker.internal:host-gateway --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Apk.Dockerfile -t id-configurator-apk .
+    docker rmi id-configurator-apk
 
 [docker:java-repo]
 dockerfile = {tox_root}/tests/dockerfiles/repos/java-repo.Dockerfile
@@ -176,6 +182,7 @@ allowlist_externals =
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Java.yaml.j2 {env_dir}/configs/Java.yaml
     docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Java.Dockerfile -t id-configurator-java .
+    docker rmi id-configurator-java
 
 [docker:certificate-repo]
 dockerfile = {tox_root}/tests/dockerfiles/repos/certificate-repo.Dockerfile
@@ -203,3 +210,4 @@ description =
 commands =
     python3 -m id_tools test render-config {tox_root}/tests/configs/Certificate.yaml.j2 {env_dir}/configs/Certificate.yaml
     docker buildx build --platform linux/amd64 --add-host=host.docker.internal:host-gateway --build-arg CERTIFICATE_REPO_PORT={env:CERTIFICATE_REPO_PORT} --build-context generated-config={env_dir}/configs -f {tox_root}/tests/dockerfiles/Certificate.Dockerfile -t id-configurator-certificates .
+    docker rmi id-configurator-certificates