fix: comments from pr (hadolint, python version)

Author: miragecentury

Containerfile

@@ -6,15 +6,15 @@ ARG APP_HOME=/home/runner
 
 USER root
 
-# System upgrade, Python 3.12/3.13/3.14 (deadsnakes), skopeo, buildah
+# System upgrade, Python 3.12/3.13 (deadsnakes), skopeo, buildah
 # hadolint ignore=DL3008
 RUN apt-get update \
     && apt-get upgrade -y \
     && apt-get install --no-install-recommends -y gnupg ca-certificates software-properties-common curl \
     && DEBIAN_FRONTEND=noninteractive add-apt-repository -y ppa:deadsnakes/ppa \
     && apt-get update \
     && apt-get install --no-install-recommends -y \
-       python3.12 python3.13 python3.14 \
+       python3.12 python3.13 \
        skopeo buildah \
     && apt-get autoremove -y \
     && apt-get clean \
@@ -83,6 +83,9 @@ RUN curl -sSL -o /tmp/pack.tgz \
 # hadolint ignore=DL3013
 RUN pip install --no-cache-dir pre-commit
 
+# Base stage must not end as root (hadolint DL3002)
+USER runner
+
 FROM base as runtime
 
 LABEL org.opencontainers.image.source=https://github.com/deerhide/python-github-runner

README.md

@@ -12,7 +12,7 @@ Container image based on the [GitHub Actions Runner](https://github.com/actions/
 
 | Tool | Version |
 |------|---------|
-| Python | 3.12, 3.13, 3.14 (via deadsnakes PPA) |
+| Python | 3.12, 3.13 (via deadsnakes PPA) |
 | Poetry | latest |
 | UV | latest |