From 4dcef3db20daa0f2469e30a7b25be7c3005fddda Mon Sep 17 00:00:00 2001
From: Paul W. Frields <stickster@gmail.com>
Date: Jul 02 2019 15:59:46 +0000
Subject: Fix build script to current


---

diff --git a/build.sh b/build.sh
index c9349e3..1e4db2d 100755
--- a/build.sh
+++ b/build.sh
@@ -1,16 +1,46 @@
 #!/bin/sh
 
+image="docker.io/antora/antora"
+cmd="--html-url-extension-style=indexify site.yml"
+
 if [ "$(uname)" == "Darwin" ]; then
     # Running on macOS.
     # Let's assume that the user has the Docker CE installed
     # which doesn't require a root password.
-    docker run --rm -it -v $(pwd):/antora antora/antora --html-url-extension-style=indexify site.yml
+    echo ""
+    echo "This build script is using Docker container runtime to run the build in an isolated environment."
+    echo ""
+    docker run --rm -it -v $(pwd):/antora $image $cmd
 
 elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
     # Running on Linux.
-    # Let's assume that it's running the Docker deamon
+    # Check whether podman is available, else faill back to docker
     # which requires root.
-    echo ""
-    echo "This build script is using Docker to run the build in an isolated environment. You might be asked for a root password in order to start it."
-sudo docker run --rm -it -v $(pwd):/antora:z antora/antora --html-url-extension-style=indexify site.yml
+
+    if [ -f /usr/bin/podman ]; then
+        echo ""
+        echo "This build script is using Podman to run the build in an isolated environment."
+        echo ""
+	podman run --rm -it -v $(pwd):/antora:z $image $cmd
+
+    elif [ -f /usr/bin/docker ]; then
+        echo ""
+        echo "This build script is using Docker to run the build in an isolated environment."
+        echo ""
+
+        if groups | grep -wq "docker"; then
+	    docker run --rm -it -v $(pwd):/antora:z $image $cmd
+	else
+            echo ""
+            echo "This build script is using $runtime to run the build in an isolated environment. You might be asked for your password."
+            echo "You can avoid this by adding your user to the 'docker' group, but be aware of the security implications. See https://docs.docker.com/install/linux/linux-postinstall/."
+            echo ""
+            sudo docker run --rm -it -v $(pwd):/antora:z $image $cmd
+	fi
+    else
+        echo ""
+	echo "Error: Container runtime haven't been found on your system. Fix it by:"
+	echo "$ sudo dnf install podman"
+	exit 1
+    fi
 fi