Add Dockerfile and make CI use docker image

.github/workflows/main.yml

@@ -17,49 +17,15 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
-    container:
-      image: texlive/texlive:latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
-      - name: Install additional packages
-        run: |
-          set -ex
-          apt-get -qy update
-          apt-get -qy install curl gawk graphviz m4 pandoc parallel python3-pygments ruby wget
-      - name: Generate the ConTeXt file database
-        run: |
-          set -ex
-          mtxrun --generate
-      - name: Install the Markdown package
-        run: |
-          set -ex
-          make base
-          mkdir -p                                     ~/texmf/tex/luatex/markdown/
-          cp -f markdown.lua                           ~/texmf/tex/luatex/markdown/
-          mkdir -p                                     ~/texmf/scripts/markdown/
-          cp -f markdown-cli.lua                       ~/texmf/scripts/markdown/
-          mkdir -p                                     ~/texmf/tex/generic/markdown/
-          cp -f markdown.tex                           ~/texmf/tex/generic/markdown/
-          mkdir -p                                     ~/texmf/tex/latex/markdown/
-          cp -f markdown.sty                           ~/texmf/tex/latex/markdown/
-          cp -f markdownthemewitiko_dot.sty            ~/texmf/tex/latex/markdown/
-          cp -f markdownthemewitiko_graphicx_http.sty  ~/texmf/tex/latex/markdown/
-          cp -f markdownthemewitiko_tilde.sty          ~/texmf/tex/latex/markdown/
-          mkdir -p                                     ~/texmf/tex/context/third/markdown/
-          cp -f t-markdown.tex                         ~/texmf/tex/context/third/markdown/
-      - name: Typeset documentation and example documents
-        run: |
-          set -ex
-          make -j `nproc` all
+      - name: Build Docker image
+        run: make docker-image
       - name: Run tests
-        run: |
-          set -ex
-          make test
+        run: docker run -v "$PWD":/git-repo -w /git-repo witiko/markdown make test
       - name: Build distribution archives
-        run: |
-          set -ex
-          make dist
+        run: docker run -v "$PWD":/git-repo -w /git-repo witiko/markdown make dist
       - name: Upload artifact markdown.tds.zip
         uses: actions/upload-artifact@v2
         with:
@@ -80,3 +46,12 @@ jobs:
         with:
           name: markdown.pdf
           path: markdown.pdf
+      - name: Authenticate registry
+        if: github.ref == 'refs/heads/main'
+        uses: azure/docker-login@v1
+        with:
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: Publish Docker image
+        if: github.ref == 'refs/heads/main'
+        run: docker push witiko/markdown --all-tags

Dockerfile

@@ -0,0 +1,79 @@
+ARG AUXILIARY_FILES="\
+    /tmp/* \
+    /var/tmp/* \
+    /var/log/* \
+    /var/lib/apt/lists/* \
+    /var/lib/{apt,dpkg,cache,log}/* \
+    /usr/share/man/* \
+    /usr/share/locale/* \
+    /var/cache/apt/* \
+"
+ARG DEPENDENCIES="\
+    curl \
+    gawk \
+    graphviz \
+    m4 \
+    pandoc \
+    parallel \
+    python3-pygments \
+    ruby \
+    wget \
+    zip \
+"
+ARG BUILD_DIR=/git-repo
+ARG DIST_DIR=${BUILD_DIR}/dist
+ARG INSTALL_DIR=/usr/local/texlive/texmf-local
+
+FROM texlive/texlive:latest as build
+ARG DEPENDENCIES
+ARG BUILD_DIR
+ARG DIST_DIR
+ARG INSTALL_DIR
+ENV DEBIAN_FRONTEND=noninteractive \
+    TERM=xterm
+COPY . /git-repo/
+RUN set -o errexit \
+ && set -o nounset \
+ && set -o xtrace \
+ && apt-get -qy update \
+ && apt-get -qy install --no-install-recommends ${DEPENDENCIES} \
+ && mtxrun --generate \
+ && make -C ${BUILD_DIR} base \
+ && mkdir -p                                                  ${INSTALL_DIR}/tex/luatex/markdown/ \
+ && cp -f ${BUILD_DIR}/markdown.lua                           ${INSTALL_DIR}/tex/luatex/markdown/ \
+ && mkdir -p                                                  ${INSTALL_DIR}/scripts/markdown/ \
+ && cp -f ${BUILD_DIR}/markdown-cli.lua                       ${INSTALL_DIR}/scripts/markdown/ \
+ && mkdir -p                                                  ${INSTALL_DIR}/tex/generic/markdown/ \
+ && cp -f ${BUILD_DIR}/markdown.tex                           ${INSTALL_DIR}/tex/generic/markdown/ \
+ && mkdir -p                                                  ${INSTALL_DIR}/tex/latex/markdown/ \
+ && cp -f ${BUILD_DIR}/markdown.sty                           ${INSTALL_DIR}/tex/latex/markdown/ \
+ && cp -f ${BUILD_DIR}/markdownthemewitiko_dot.sty            ${INSTALL_DIR}/tex/latex/markdown/ \
+ && cp -f ${BUILD_DIR}/markdownthemewitiko_graphicx_http.sty  ${INSTALL_DIR}/tex/latex/markdown/ \
+ && cp -f ${BUILD_DIR}/markdownthemewitiko_tilde.sty          ${INSTALL_DIR}/tex/latex/markdown/ \
+ && mkdir -p                                                  ${INSTALL_DIR}/tex/context/third/markdown/ \
+ && cp -f ${BUILD_DIR}/t-markdown.tex                         ${INSTALL_DIR}/tex/context/third/markdown/ \
+ && texhash \
+ && make -C ${BUILD_DIR} dist \
+ && mkdir ${DIST_DIR} \
+ && unzip ${BUILD_DIR}/markdown.tds.zip -d ${DIST_DIR}
+
+FROM texlive/texlive:latest
+ARG AUXILIARY_FILES
+ARG DEPENDENCIES
+ARG DIST_DIR
+ARG INSTALL_DIR
+LABEL authors="Vít Novotný <witiko@mail.muni.cz>"
+ENV DEBIAN_FRONTEND=noninteractive \
+    TERM=xterm
+COPY --from=build ${DIST_DIR} ${INSTALL_DIR}/
+RUN set -o errexit \
+ && set -o nounset \
+ && set -o xtrace \
+ && apt-get -qy update \
+ && apt-get -qy install --no-install-recommends ${DEPENDENCIES} \
+ && apt-get -qy autoclean \
+ && apt-get -qy clean \
+ && apt-get -qy autoremove --purge \
+ && rm -rf ${AUXILIARY_FILES} \
+ && mtxrun --generate \
+ && texhash

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all base clean implode dist test examples
+.PHONY: all base clean implode dist test examples docker-image
 AUXFILES=markdown.bbl markdown.cb markdown.cb2 markdown.glo markdown.bbl \
   markdown.run.xml markdown.bib markdown.markdown.in markdown.markdown.lua \
   markdown.markdown.out markdown-interfaces.md markdown-miscellanea.md \
@@ -45,6 +45,11 @@ all: $(MAKEABLES)
 base: $(INSTALLABLES)
 	$(MAKE) clean
 
+# This target builds a witiko/markdown Docker image.
+docker-image:
+	docker build -t witiko/markdown:latest .
+	docker tag witiko/markdown:latest witiko/markdown:$(shell git describe --tags --always --long)
+
 # This target extracts the source files out of the DTX archive.
 $(INSTALLABLES) $(MARKDOWN_USER_MANUAL): $(INSTALLER) $(DTXARCHIVE)
 	xetex $<