Add a Dockerfile and documentation to the project

contrib/Dockerfile

@@ -0,0 +1,62 @@
+# ngIRCd -- The Next Generation IRC Daemon
+# Copyright (c)2001-2024 Alexander Barton (alex@barton.de) and Contributors
+
+# Build Container
+
+FROM docker.io/library/debian:stable-slim AS build
+USER root
+RUN apt-get -y update \
+	&& apt-get -y install --no-install-recommends \
+		autoconf \
+		automake \
+		build-essential \
+		expect \
+		gawk \
+		git \
+		libgnutls28-dev \
+		libident-dev \
+		libpam0g-dev \
+		openssl \
+		pkg-config \
+		telnet \
+		zlib1g-dev \
+	&& mkdir -p /usr/local/src/ngircd /opt/ngircd \
+	&& chown bin:bin /usr/local/src/ngircd /opt/ngircd
+WORKDIR /usr/local/src/ngircd
+COPY . /usr/local/src/ngircd
+RUN chown -R bin /usr/local/src/ngircd
+USER bin
+RUN ./autogen.sh --prefix=/opt/ngircd \
+		--with-gnutls \
+		--with-iconv \
+		--with-ident \
+		--with-pam \
+	&& make all \
+	&& make -C src/ngircd check \
+	&& make install \
+	&& printf \
+		"# ngircd.conf\n\n[Global]\nServerGID=irc\nServerUID=irc\n\n[Options]\nIdent=no\nPAM=no\n\n[SSL]\nCAFile=/etc/ssl/certs/ca-certificates.crt\n" \
+		>/opt/ngircd/etc/ngircd.conf \
+	&& chmod -R a+rX /opt/ngircd
+
+# Run container
+
+FROM docker.io/library/debian:stable-slim
+USER root
+RUN apt-get -y update \
+	&& apt-get -y install --no-install-recommends --no-install-suggests \
+		ca-certificates \
+		catatonit \
+		libgnutls30 \
+		libident \
+		libpam0g \
+		libwrap0 \
+		zlib1g \
+	&& apt-get -y clean \
+	&& rm -rf /var/cache/debconf/*-old /var/lib/apt/lists/*
+COPY --from=build /opt/ngircd /opt/ngircd
+USER irc
+ENTRYPOINT [ "/usr/bin/catatonit", "--", "/opt/ngircd/sbin/ngircd", "--nodaemon" ]
+EXPOSE 6667 6697
+HEALTHCHECK --interval=30s --timeout=5s --retries=1 --start-period=5s \
+	CMD [ "/usr/bin/grep", "-F", ":1A0B ", "/proc/net/tcp" ]

contrib/Makefile.am

@@ -14,6 +14,7 @@ SUBDIRS = Debian
 EXTRA_DIST = README.md \
 	de.barton.ngircd.metainfo.xml \
 	de.barton.ngircd.plist \
+	Dockerfile \
 	ngindent.sh \
 	ngircd-bsd.sh \
 	ngIRCd-Logo.gif \

contrib/README.md

@@ -9,6 +9,9 @@ This `contrib/` directory contains the following sub-folders and files:
 
 - `de.barton.ngircd.plist[.tmpl]`: launchd(8) property list file.
 
+- `Dockerfile`: Container definition file, for Docker or Podman for example.
+  More information can be found in the `doc/Container.md` file.
+
 - `ngindent.sh`: Script to indent the code of ngIRCd in the "standard way".
 
 - `ngircd-bsd.sh`: Start/stop script for FreeBSD.