Update to Docker image to use Trixie (slim) instead of Bookwork (also slim) and reordered some of the build steps, so ensure a functional build

Author: jonasbn

CHANGELOG.md

@@ -2,9 +2,18 @@
 
 ## 0.53.0, 2025-10-25, maintenance release, update not required
 
-- Docker image updated to Python 3.14.0 bookworm slim [Release notes for Python 3.14.0](https://docs.python.org/release/3.14.0/whatsnew/changelog.html)
-
-- Bumped the requirement for cython to `3.0.11` or above, addressing a build issue with lxml, located when testing the PR : [#274](https://github.com/rojopolis/spellcheck-github-actions/pull/274) from @dependabot, the above updated of Python
+- Docker image updated to Python 3.14.0 trixie slim [Release notes for Python 3.14.0](https://docs.python.org/release/3.14.0/whatsnew/changelog.html), this originated from the PR mentioned below, however updated to Trixie from Bookworm and as always the slim variant is used
+
+- Bumped the requirement for cython to `3.0.11` or above, addressing a build issue with lxml, located when testing the PR : [#274](https://github.com/rojopolis/spellcheck-github-actions/pull/274) from @dependabot, the above update of Python
+
+- In general the Docker build file had a few updates since the above changes required some tweaking of the Dockerfile
+  - Order of installation of dependencies adjusted to ensure that lxml can build correctly
+  - Installation of:
+    - build-essential
+    - pkg-config
+    - libxml2-dev
+    - libxslt1-dev
+    - zlib1g-dev
 
 ## 0.52.0, 2025-09-10, feature release, update not required
 

Dockerfile

@@ -1,6 +1,6 @@
 # REF: https://hub.docker.com/_/python
-# Python 3.13.7-slim-bookworm
-FROM python@sha256:e3a6ccbe44d9cbfa4f107f238a0e95fa70e0d084e87689222e951d062ac89854
+# Python 3.14.0-slim-trixie
+FROM python@sha256:4ed33101ee7ec299041cc41dd268dae17031184be94384b1ce7936dc4e5dead3
 
 LABEL "com.github.actions.name"="Spellcheck Action"
 LABEL "com.github.actions.description"="Check spelling of files in repository"
@@ -17,11 +17,11 @@ COPY constraint.txt /constraint.txt
 COPY spellcheck.yaml /spellcheck.yaml
 COPY pwc.py /pwc.py
 
-ENV PIP_CONSTRAINT=/constraint.txt
-RUN pip3 install -r /requirements.txt
-
 # REF: https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#apt-get
 RUN apt-get update && apt-get install -y \
+    build-essential pkg-config \
+    libxml2-dev libxslt1-dev \
+    zlib1g-dev \
     aspell hunspell \
     aspell-en hunspell-en-au hunspell-en-ca hunspell-en-gb hunspell-en-us \
     aspell-de hunspell-de-at hunspell-de-ch hunspell-de-de \
@@ -32,5 +32,8 @@ RUN apt-get update && apt-get install -y \
     aspell-it hunspell-it \
     && rm -rf /var/lib/apt/lists/*
 
+ENV PIP_CONSTRAINT=/constraint.txt
+RUN pip3 install -r /requirements.txt
+
 WORKDIR /tmp
 ENTRYPOINT ["/bin/bash", "/entrypoint.sh"]