ci: Fix man page build

.github/workflows/build-man-pages.sh

@@ -1,16 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [ $# -lt 2 ]; then
-  echo "usage: $0 <output-dir> <input-file>..."
-  exit 1
-fi
-
-outdir="$1"
-shift
-
-for input in "$@"; do
-  echo "Building $input.."
-  asciidoctor --doctype manpage --backend manpage --destination-dir "$outdir" "$input"
-done

.github/workflows/build.bash

@@ -1,19 +1,45 @@
-#!/bin/bash
+#!/bin/sh
 
-set -o errexit
-set -o nounset
-set -o pipefail
+set -e
+
+# Attempt to install `asciidoctor` on Debian, Arch Linux and MacOS.
+install() {
+  os="$(uname)"
+
+  case "$os" in
+    Linux)
+      if command -v apt-get >/dev/null 2>&1; then
+        # Debian
+        apt-get update
+        apt-get install -y asciidoctor
+      elif command -v pacman >/dev/null 2>&1; then
+        # Arch Linux
+        pacman -Sy --noconfirm asciidoctor
+      fi ;;
+    Darwin) # MacOS
+      if command -v brew >/dev/null 2>&1; then
+        brew install asciidoctor
+      fi ;;
+    *)
+      echo "fatal: unknown operating system: $os"
+      exit 1 ;;
+  esac
+}
 
 main () {
-    if [[ $# -ne 1 ]]; then
+    if [ $# -ne 1 ]; then
         echo "$#: Wrong number of arguments"
-        return 1
+        exit 1
     fi
 
-    local target=$1
+    if ! command -v asciidoctor >/dev/null 2>&1; then
+      install
+    fi
+
+    target="$1"
     rustup target add "$target"
 
-    local staging="radicle-$target"
+    staging="radicle-$target"
     mkdir -p "$staging"
 
     cargo build --target="$target" --package=radicle-httpd --release
@@ -28,7 +54,7 @@ main () {
     cargo build --target="$target" --bin git-remote-rad --release
     cp target/"$target"/release/git-remote-rad "$staging"/
 
-    ./build-man-pages.sh "$staging" "$(find . -name '*.1.adoc')"
+    scripts/build-man-pages.sh "$staging" "$(find . -name '*.1.adoc')"
 
     tar czf "$staging.tar.gz" "$staging"
     cp "$staging.tar.gz" "$staging"/

scripts/build-man-pages.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+set -e
+
+main() {
+  if [ $# -lt 2 ]; then
+    echo "usage: $0 <output-dir> <input-file>..."
+    exit 1
+  fi
+
+  outdir="$1"
+  shift
+
+  for input in "$@"; do
+    echo "Building $input.."
+    asciidoctor --doctype manpage --backend manpage --destination-dir "$outdir" "$input"
+  done
+}
+
+main "$@"