Improve emba integration

* admin/notes/emba: Mention generated compatibility-report.html.

* test/infra/Dockerfile.emba (emacs-base): Install man-db.
(emacs-inotify): Don't install clangd.
(emacs-eglot): Derive from debian:trixie.  Install rust-analyzer.

* test/infra/gitlab-ci.yml (.job-template): Make actions in
after_script more robust.

admin/notes/emba

@@ -66,7 +66,11 @@ jobs run scheduled in a pipeline every 8 hours.
 The log files for every test job are kept on the server for a week.
 They can be downloaded from the server, visiting the URL
 <https://emba.gnu.org/emacs/emacs/-/pipelines>, and selecting the job
-in question.
+in question.  Browse the job artifacts.
+
+Additionally, the artifacts of the 'test-tree-sitter' job contain the
+file 'compatibility-report.html', which reports tree-sitter grammars
+compatibility status.
 
 Every pipeline generates a JUnit test report for the respective test
 jobs, which can be inspected on the pipeline web page.  This test

test/infra/Dockerfile.emba

@@ -29,15 +29,14 @@ FROM debian:bookworm as emacs-base
 RUN apt-get update && \
     apt-get install -y --no-install-recommends -o=Dpkg::Use-Pty=0 \
       libc-dev gcc g++ make autoconf automake libncurses-dev gnutls-dev \
-      libxml2-dev libdbus-1-dev libacl1-dev acl git texinfo gdb \
+      libxml2-dev libdbus-1-dev libacl1-dev acl git man-db texinfo gdb \
     && rm -rf /var/lib/apt/lists/*
 
 FROM emacs-base as emacs-inotify
 
-# We install clangd for Eglot tests.
 RUN apt-get update && \
     apt-get install -y --no-install-recommends -o=Dpkg::Use-Pty=0 \
-      inotify-tools clangd \
+      inotify-tools \
     && rm -rf /var/lib/apt/lists/*
 
 COPY . /checkout
@@ -60,12 +59,19 @@ RUN ./autogen.sh autoconf
 RUN ./configure --with-file-notification=gfile
 RUN make -j `nproc` bootstrap
 
-FROM emacs-base as emacs-eglot
+FROM debian:trixie as emacs-eglot
 
-# Install clangd, tsserver.
+# This mimics emacs-base.
 RUN apt-get update && \
     apt-get install -y --no-install-recommends -o=Dpkg::Use-Pty=0 \
-      clangd node-typescript \
+      libc-dev gcc g++ make autoconf automake libncurses-dev gnutls-dev \
+      libxml2-dev libdbus-1-dev libacl1-dev acl git man-db texinfo gdb \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install clangd, tsserver, rust-analyzer.
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends -o=Dpkg::Use-Pty=0 \
+      clangd node-typescript rust-analyzer cargo \
     && rm -rf /var/lib/apt/lists/*
 
 # eclipse-jdt-ls is planned as Java language server.
@@ -81,9 +87,6 @@ RUN apt-get update && \
 #     && rm -rf /var/lib/apt/lists/*
 # RUN snap install core
 
-# # Install rust-analyzer.
-# RUN snap install rust-analyzer --beta
-
 # # Install typescript-language-server.
 # RUN snap install typescript-language-server
 

test/infra/gitlab-ci.yml

@@ -118,11 +118,13 @@ default:
      docker cp ${test_name}:checkout/compatibility-report.html ${test_name} ||
      true'
     - 'test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}'
-    - 'find ${test_name}
+    - 'test -d ${test_name} &&
+     find ${test_name}
        ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} -o
             -name compatibility-report.html \) -type f -delete'
     # BusyBox find does not know -empty.
-    - 'find ${test_name} -type d -depth -exec rmdir {} + 2>/dev/null'
+    - 'test -d ${test_name} &&
+     find ${test_name} -type d -depth -exec rmdir {} + 2>/dev/null'
 
 .build-template:
   needs: []