Debug CI by leaving images alive

Jenkinsfile

@@ -192,7 +192,7 @@ pipeline {
 	}
 	post {
 		always {
-			sh 'docker-compose down --rmi all --remove-orphans --volumes -t 30'
+			//sh 'docker-compose down --rmi all --remove-orphans --volumes -t 30'
 			sh 'echo Reverting ownership'
 			sh 'docker run --rm -v $(pwd):/data ${DOCKER_CI_TOOLS} chown -R $(id -u):$(id -g) /data'
 		}

docker/dev/Dockerfile

@@ -6,7 +6,6 @@ ENV SUPPRESS_NO_CONFIG_WARNING=1
 ENV S6_FIX_ATTRS_HIDDEN=1
 
 RUN echo "fs.file-max = 65535" > /etc/sysctl.conf \
-	&& rm -rf /etc/nginx \
 	&& apk update \
 	&& apk add python2 certbot jq \
 	&& rm -rf /var/cache/apk/*