Add github workflow for debian packaging

Builds can be triggered manually (`workflow_dispatch`) and by pushing a
tagged release (`v*.*.*`)

- There's a plain build done in an amd64 ubuntu-latest image and tar'ed
- There's an amd64 ubuntu-latest deb package
- There's an amd64 debian buster deb package made in a docker container

Release is defined in the RELEASE_VERSION env var in the workflow
configuration but must also be changed in the debian/ metadata.

3 files changed, 27 insertions, 0 deletions

diff --git a/.github/workflows/docker-debian/action.yml b/.github/workflows/docker-debian/action.yml
new file mode 100644
index 00000000..d510199b
--- /dev/null
+++ b/.github/workflows/docker-debian/action.yml
@@ -0,0 +1,4 @@
+name: 'docker'
+runs:
+  using: 'docker'
+  image: 'debian-dockerfile'
diff --git a/.github/workflows/docker-debian/debian-dockerfile b/.github/workflows/docker-debian/debian-dockerfile
new file mode 100644
index 00000000..147449a0
--- /dev/null
+++ b/.github/workflows/docker-debian/debian-dockerfile
@@ -0,0 +1,8 @@
+# Container image that runs your code
+FROM debian:buster
+
+# Copies your code file from your action repository to the filesystem path `/` of the container
+COPY entrypoint.sh /entrypoint.sh
+
+# Code file to execute when the docker container starts up (`entrypoint.sh`)
+ENTRYPOINT ["/entrypoint.sh"]
diff --git a/.github/workflows/docker-debian/entrypoint.sh b/.github/workflows/docker-debian/entrypoint.sh
new file mode 100755
index 00000000..94eb7e53
--- /dev/null
+++ b/.github/workflows/docker-debian/entrypoint.sh
@@ -0,0 +1,15 @@
+#!/bin/sh -xv
+
+apt-get update -qq -y
+apt-get install -y -qq --no-install-recommends cmake libsdl2-dev libssl-dev libpcre3-dev zlib1g-dev libunistring-dev libmpg123-dev debhelper dh-make devscripts fakeroot git build-essential
+git submodule sync
+
+git archive --format=tar.gz --prefix=lagrange-${RELEASE_VERSION}/ HEAD >lagrange-${RELEASE_VERSION}.tar.gz
+tar -xvzf lagrange-${RELEASE_VERSION}.tar.gz
+ln -s lagrange-${RELEASE_VERSION}.tar.gz lagrange_${RELEASE_VERSION}.orig.tar.gz 
+cd lagrange-${RELEASE_VERSION}
+debuild
+cd ..
+mkdir -p artifacts
+mv *deb artifacts/
+