Switch from GitLab to GitHub

This includes updating URLs, removing GitLab configuration files and updating docs

.devcontainer/image/Dockerfile

@@ -197,7 +197,7 @@ RUN useradd --create-home ${USER}
 LABEL \
     maintainer="Alex Povel <[email protected]>" \
     org.label-schema.description="TeXLive with most packages, JavaRE, Inkscape, pandoc and more" \
-    org.label-schema.vcs-url="https://collaborating.tuhh.de/alex/latex-cookbook" \
+    org.label-schema.vcs-url="https://github.com/alexpovel/latex-cookbook" \
     org.label-schema.schema-version="1.0"
 
 ARG INSTALL_DIR="/install"

.gitattributes

@@ -1,19 +1,10 @@
-# This file tells platforms like GitLab how to treat certain files, e.g.
-# for syntax highlighting.
-
-# GitLab uses the Rouge Ruby gem; for available languages, see:
-# https://github.com/rouge-ruby/rouge/wiki/List-of-supported-languages-and-lexers
-
 # bib -> latex does not help much, since it is also not valid latex, but at
 # least highlights comments (%) correctly
 *.bib linguist-language=latex
-*.bib gitlab-language=latex
 
 # Bash is wrong, it is really a plain-text file.
-# However, it gets us comment highlighting (hiding/grey)
-# and is close enough.
+# However, it gets us comment highlighting (hiding/grey) and is close enough.
 *.profile linguist-language=bash
-*.profile gitlab-language=bash
 
 # Do not include git config files in archives (e.g. when downloading as ZIP):
 .git* export-ignore

CHANGELOG.md

@@ -5,8 +5,6 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-[[_TOC_]]
-
 ## [Unreleased]
 
 ## [4.0.0] - 2021-10-18

Makefile

@@ -15,8 +15,8 @@
 # `make file.pdf` *both locally and in CI*.
 # Without make, we would otherwise have very different build steps in local and CI
 # environments.
-# Additionally, using `make`, the CI instructions (.gitlab-ci.yml) can be simplified
-# considerably, leading to decoupling.
+# Additionally, using `make`, the CI instructions (.gitlab-ci.yml, GitHub actions etc.)
+# can be simplified considerably, leading to decoupling.
 # Moving CI systems then becomes much easier.
 
 
@@ -65,6 +65,9 @@ PANDOC_FLAGS = --defaults=pandoc/defaults.yaml
 # See also:
 # https://www.gnu.org/software/make/manual/html_node/Conditional-Syntax.html#Conditional-Syntax
 # https://docs.gitlab.com/ee/ci/variables/predefined_variables.html
+#
+# That same environment variable is defined for GitHub Actions as well:
+# https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables
 ifdef CI
 	# In container, run commands directly:
 	LATEXMK = latexmk

chapters/frontmatter/preface.tex

@@ -63,6 +63,6 @@
 \paragraph{Source Repository}
 The source repository for this document is at
 \begin{center}
-    \url{https://collaborating.tuhh.de/alex/latex-cookbook} .
+    \url{https://github.com/alexpovel/latex-cookbook} .
 \end{center}
 Any references to the \enquote{source} or \enquote{repository} refer to that project.

chapters/mainmatter/usage.tex

@@ -166,11 +166,10 @@ \subsection{Compilation steps}
 \end{displayquote}
 Good riddance to that.
 
-If all of this is embedded into a pipeline on GitLab, your documents are built whenever
-you \texttt{git push} to the remote server (or whenever you configure it to).
-It does not get simpler; the downside is of course the lengthier setup, but all of that
-is explained in the
-\href{https://collaborating.tuhh.de/alex/latex-cookbook/-/blob/master/README.md}{README}.
+If all of this is embedded into a pipeline on GitLab, GitHub Actions, or similar,
+your documents are built whenever you \texttt{git push} to the remote server
+(or whenever you configure it to).
+It does not get simpler; the downside is of course the lengthier setup.
 Also, the repository itself is a live demonstration where everything is set up already!
 
 \subsubsection{Slow compilation}

pandoc/metadata.yaml

@@ -1,3 +1,3 @@
 author: [Alex Povel]
-subject: "Advantages of a workflow using LaTeX with GitLab"
-keywords: [LaTeX, GitLab, CI, CD, Markdown]
+subject: "Advantages of a workflow using LaTeX with GitLab, GitHub Actions etc."
+keywords: [LaTeX, CI, CD, Markdown]

tests/README.md

@@ -53,7 +53,7 @@ If it does, `poetry` will complain to you accordingly.
 In such a case, [`pyenv`](https://github.com/pyenv/pyenv) has worked well for me to set
 up a suitable, local or system-wide Python interpreter of *any* desired version.
 
-The [setup for the CI pipeline](../.gitlab-ci.yml) is quite different.
+The setup for the CI pipeline (GitHub Actions) is quite different.
 Take a look if you like, but the steps there are not applicable to local usage.
 
 ## Running