Initial release

.gitlab-ci.yml

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+image: docker:latest
+
+stages:
+- test
+- build
+
+variables:
+  VERSION: ${CI_COMMIT_TAG:-latest}
+  CACHETAG: build
+  DOCKER_REGISTRY: registry.leenooks.net
+  DOCKER_HOST: tcp://${DOCKER_REGISTRY}-leenooks-ci-docker:2375
+
+services:
+- ${DOCKER_REGISTRY}/leenooks/ci-docker:dind
+
+before_script:
+- docker info
+- docker version
+- docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN ${DOCKER_REGISTRY}
+- echo "CI_PROJECT_PATH ${CI_PROJECT_PATH} CI_COMMIT_TAG ${CI_COMMIT_TAG} CI_COMMIT_REF_NAME ${CI_COMMIT_REF_NAME}"
+- echo "CI_REGISTRY ${CI_REGISTRY} CI_REGISTRY_IMAGE ${CI_REGISTRY_IMAGE} CI ${CI}"
+
+test:
+  stage: test
+  script:
+  - cat /etc/hosts
+  - env|sort
+  - docker build -t ${CI_REGISTRY_IMAGE}:${VERSION} .
+  - docker images
+  only:
+  - debug
+
+build:
+  stage: build
+  script:
+  - chmod 500 init
+  - docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG} || true
+  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
+  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
+  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
+  tags:
+  - docker
+  only:
+  - master

Dockerfile

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+# NAME leenooks/smtp
+# VERSION latest
+# BUILD docker build -t="leenooks/smtp" .
+
+FROM registry.leenooks.net/leenooks/base:7
+
+RUN yum -y install epel-release && yum clean all
+
+# EPEL & Leenooks packages
+RUN yum -y install \
+	make \
+	m4 \
+	sendmail \
+	sendmail-cf \
+	ln-mail-server \
+	milter-greylist \
+	&& yum clean all
+
+#	ln-mail-client \
+
+RUN useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin -p SmTpR3l@Y
+
+EXPOSE 25
+
+COPY init /sbin/
+
+# Starting
+ENTRYPOINT [ "/sbin/init" ]
+CMD [ "start" ]

init

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+#!/bin/bash
+set -e
+
+NAME="SMTP"
+
+function stop {
+	echo "Stopping ${NAME}"
+	kill $(cat /var/run/sendmail.pid|head -1)
+}
+
+trap 'stop' SIGTERM
+
+if [ -z `hostname --domain` ]; then
+	echo "You must start this container with --hostname= specifying a domain name"
+	exit 1
+fi
+
+if [ "$1" == "start" ]; then
+	/usr/sbin/saslauthd -m /run/saslauthd -a pam
+	cd /etc/mail && rm -f *.db && make && m4 sendmail.mc > sendmail.cf && /usr/sbin/sendmail -q1h -bD &
+
+	wait
+else
+	exec $@
+fi