Add automatic package generation for Debian bullseye (11).

.drone.yml

@@ -112,6 +112,30 @@ trigger:
   - tag
 
 steps:
+- name: Debian bullseye
+  image: debian:bullseye-slim
+  pull: always
+  environment:
+    CXX: g++-10
+    CXXFLAGS: -pipe -O2
+    DEBIAN_FRONTEND: noninteractive
+    LANG: C.UTF-8
+  commands:
+  - rm /etc/apt/apt.conf.d/docker-clean
+  - alias apt-get='rm -f /var/cache/apt/archives/lock && apt-get'
+  - apt-get update -q
+  - apt-get install -qq build-essential cmake clang locales lsb-release
+  - apt-get install -qq libboost-program-options-dev libboost-locale-dev libboost-regex-dev libboost-log-dev gettext libarchive-dev libfmt-dev asciidoc libpugixml-dev nlohmann-json3-dev
+  - rm -rf build && mkdir -p build && cd build
+  - cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=/usr ..
+  - make VERBOSE=1
+  - make install DESTDIR=install
+  - cpack -G DEB
+  - cp -v epubgrep_${DRONE_TAG}-0_amd64_bullseye.deb ..
+  volumes:
+  - name: debian-package-cache
+    path: /var/cache/apt/archives
+
 - name: Debian buster
   image: debian:buster-slim
   pull: always
@@ -208,6 +232,7 @@ steps:
     prerelease: true
     files:
       - epubgrep_${DRONE_TAG}-0_amd64_buster.deb
+      - epubgrep_${DRONE_TAG}-0_amd64_bullseye.deb
       - epubgrep_${DRONE_TAG}-0_amd64_focal.deb
       - epubgrep_${DRONE_TAG}-0_amd64_bionic.deb
     checksum: