Updated README

Dockerfile

@@ -1,4 +1,4 @@
-FROM asciidoctor/docker-asciidoctor:1.41.0
+FROM docker.io/asciidoctor/docker-asciidoctor:1.41.0
 
 COPY theme /theme
 COPY fonts /theme/fonts

Makefile

@@ -1,10 +1,10 @@
 all: image
 
 image:
-	docker build -t vshn/asciidoctor-epub3:1.14.2 .
+	podman build -t ghcr.io/vshn/asciidoctor-epub3:master .
 
 build/test.epub:
-	docker run --rm --tty --user "$$(id -u)" --volume "$${PWD}":/documents vshn/asciidoctor-epub3:1.14.2 sample/test.adoc --destination-dir=build
+	podman run --rm --volume "$${PWD}":/documents ghcr.io/vshn/asciidoctor-epub3:master sample/test.adoc --destination-dir=build
 
 clean:
 	rm -rf build

README.adoc

@@ -1,8 +1,6 @@
 = VSHN EPUB3 Generator based on Asciidoctor
 
-This project generates a Docker image to be used to generate EPUB3 books with a standard VSHN style and fonts.
-
-The image is available in https://hub.docker.com/r/vshn/asciidoctor-epub3[Docker Hub].
+This project generates a container image to be used to generate EPUB3 books with a standard VSHN style and fonts.
 
 == Build
 
@@ -12,11 +10,11 @@ Run the `make` command to build the image.
 
 Run the following command to build an EPUB3 using an Asciidoc file as a basis:
 
-`docker run --rm --tty --user "$(id -u)" --volume "${PWD}":/documents vshn/asciidoctor-epub3:1.14.1 file.adoc`
+`podman run --rm --volume "${PWD}":/documents ghcr.io/vshn/asciidoctor-epub3:1.14.1 file.adoc`
 
 Any parameters passed after the command line will be fed directly to Asciidoctor, for example
 
-`docker run --rm --tty --user "$(id -u)" --volume "${PWD}":/documents vshn/asciidoctor-epub3:1.14.1 file.adoc --destination-dir=./_archive`
+`podman run --rm --volume "${PWD}":/documents ghcr.io/vshn/asciidoctor-epub3:1.14.1 file.adoc --destination-dir=./_archive`
 
 == Default Attributes