diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e51922e1..ab22cbb2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -130,7 +130,7 @@ jobs:
       uses: actions/cache@v3
       with:
         path: container-test-template-cache
-        key: ${{ runner.os }}-go-build-cache-${{ hashFiles('containers/test-template/**') }}
+        key: ${{ runner.os }}-test-template-cache-${{ hashFiles('containers/test-template/**') }}
 
     - name: Inject container-test-template-cache into docker
       uses: reproducible-containers/buildkit-cache-dance@v2.1.2
diff --git a/containers/test-template/Dockerfile b/containers/test-template/Dockerfile
index 5fd54422..c3280b01 100644
--- a/containers/test-template/Dockerfile
+++ b/containers/test-template/Dockerfile
@@ -1,4 +1,5 @@
-FROM python:3.11.5
+ARG PYTHON_VERSION=3.11
+FROM python:${PYTHON_VERSION}-slim
 
 # Install and uninstall snakebids to cache it and it's dependences
 RUN python -m pip install pipx && \
diff --git a/pyproject.toml b/pyproject.toml
index d7128594..e24d8cc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -104,11 +104,17 @@ pytest --doctest-modules --ignore=docs \
 mkinit = "mkinit --recursive --nomods --black -i snakebids"
 benchmark = "pytest --benchmark-only --benchmark-autosave"
 
+[tool.poe.tasks._get_version]
+imports = ["platform"]
+expr = "platform.python_version()"
+
 [tool.poe.tasks.build-container]
 args = [{ name = "container_id", positional = true, required = true }]
+uses = { VERSION = "_get_version"}
 cmd = """
     docker build 'containers/${container_id}' \
-        --tag 'snakebids/${container_id}:dev'
+        --tag 'snakebids/${container_id}:${VERSION}' \
+        --build-arg="PYTHON_VERSION=${VERSION}"
 """
 
 [tool.isort]
diff --git a/snakebids/tests/test_template.py b/snakebids/tests/test_template.py
index 3f0d138a..b8f20975 100644
--- a/snakebids/tests/test_template.py
+++ b/snakebids/tests/test_template.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import platform
 import subprocess as sp
 from pathlib import Path
 
@@ -11,7 +12,7 @@
 from snakebids.tests.helpers import needs_docker
 
 
-@needs_docker("snakebids/test-template:dev")
+@needs_docker(f"snakebids/test-template:{platform.python_version()}")
 @pytest.mark.parametrize(
     ["build", "venv"],
     [