Add integration tests for Arch, Ubuntu, Fedora

.dockerignore

@@ -3,4 +3,5 @@ _local
 .idea
 .git
 .github
-varia/Dockerfile.tests
+test.sh
+varia/Dockerfile.*

.github/workflows/tests.yml

@@ -5,7 +5,7 @@ on:
   pull_request:
   schedule:
     # 16:21 UTC on Tuesdays
-    - cron: "21 16 * * tue"
+    - cron: "21 16 * * TUE"
   repository_dispatch:
     types: [tests]
 
@@ -24,3 +24,24 @@ jobs:
         run: docker run --rm ego-build cargo clippy --color=always
       - name: rustfmt
         run: docker run --rm ego-build cargo fmt -- --color=always --check
+
+  test-archlinux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Test on Arch Linux
+        run: ./test.sh archlinux --pull
+
+  test-ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Test on Ubuntu
+        run: ./test.sh ubuntu --pull
+
+  test-fedora:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Test on Fedora
+        run: ./test.sh fedora --pull

test.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# TODO: Rename script to something more descriptive
+
+set -e
+# ARGS=--pull
+DISTRO=${1:-archlinux}
+IMG=ego-$DISTRO
+
+export DOCKER_BUILDKIT=1
+
+if [ "$DISTRO" = ubuntu ]; then
+  SYSTEMD=/bin/systemd
+else
+  SYSTEMD=/usr/lib/systemd/systemd
+fi
+
+docker build . ${2-} -f varia/Dockerfile.integration --build-arg=distro=$DISTRO -t $IMG
+docker run --rm $IMG sh -c 'id && ego --sudo id'
+docker run --rm \
+  -e container=docker \
+  --tmpfs /run \
+  --tmpfs /tmp \
+  -v /sys/fs/cgroup:/sys/fs/cgroup:ro \
+  --cap-add SYS_ADMIN \
+  $IMG "$SYSTEMD" quiet systemd.firstboot=off \
+  systemd.setenv="CMD='id && mkdir -p /run/user/0 && XDG_RUNTIME_DIR=/run/user/0 ego --machinectl id'"

varia/Dockerfile.integration

@@ -0,0 +1,53 @@
+# This Dockerfile is for integration testing in CI, see .github/workflows/tests.yml
+# Run with --build-arg=channel=stable OR --build-arg=channel=nightly (default)
+ARG distro=archlinux
+
+# Using Dockerfile conditionals
+#### ARCH LINUX base image
+FROM archlinux:base-devel AS ego-base-archlinux
+RUN pacman --noconfirm -Sy cargo acl systemd
+
+#### UBUNTU base image
+FROM ubuntu:latest AS ego-base-ubuntu
+RUN apt-get update && \
+    apt-get install -y cargo libacl1-dev systemd systemd-container sudo && \
+    rm -rf /var/lib/apt/lists/*
+
+#### FEDORA base image
+FROM fedora:latest AS ego-base-fedora
+RUN yum install -y cargo libacl-devel systemd systemd-container && \
+    yum clean all && \
+    rm -rf /var/cache/yum
+
+#### Common logic for base image
+FROM ego-base-$distro AS cargo-build
+
+WORKDIR /root/build
+# Make warnings fatal
+ENV RUSTFLAGS="-D warnings"
+
+# Build Cargo dependencies for cache
+COPY Cargo.toml Cargo.lock ./
+RUN mkdir src/ && \
+	echo "pub fn main() {println!(\"dummy function\")}" > src/main.rs && \
+	cargo build --bins --tests --color=always && \
+	rm -rdv target/*/deps/ego-* \
+	        target/*/.fingerprint/ego-*
+
+# Do the actual build
+COPY src src
+RUN cargo install --root=/usr/local --path . --color=always
+
+RUN useradd ego --uid 155 --create-home && \
+    useradd user --create-home && \
+    mkdir -m 0700 -p /run/user/0 && \
+    echo root:root | chpasswd
+# TODO: Get rid of XDG_RUNTIME_DIR requirement for command-line-only usage? (see #29)
+ENV XDG_RUNTIME_DIR=/run/user/0
+
+# From https://www.brad-x.com/2014/12/27/running-systemd-within-a-docker-image/
+RUN systemctl mask swap.target
+#RUN systemctl disable graphical.target; systemctl enable multi-user.target
+RUN mkdir -p /etc/systemd/system/console-getty.service.d
+COPY varia/console-getty-override.conf /etc/systemd/system/console-getty.service.d/override.conf
+RUN echo -e '[Journal]\nStorage=none' > /etc/systemd/journald.conf

varia/console-getty-override.conf

@@ -0,0 +1,12 @@
+# /etc/systemd/system/console-getty.service.d/override.conf
+[Service]
+ExecStart=
+# ExecStart=-/usr/bin/sh -c '${CMD}'
+ExecStart=-/usr/bin/bash
+ExecStopPost=/usr/bin/systemctl poweroff --force
+StandardInput=tty
+StandardOutput=tty
+Type=oneshot
+Restart=no
+# XXX?
+KillMode=control-group

varia/run-host-command.service

@@ -0,0 +1,12 @@
+# /etc/systemd/system/console-getty.service.d/override.conf
+[Service]
+#ExecStart=
+# ExecStart=-/usr/bin/sh -c '${CMD}'
+ExecStart=-/usr/bin/bash
+ExecStopPost=/usr/bin/systemctl poweroff --force
+StandardInput=tty
+StandardOutput=tty
+Type=oneshot
+Restart=no
+# XXX?
+KillMode=control-group