add example how to build dedicated container for services such as dagent (#391)

* add example how to build dedicated container for services such as dagent

Obsoletes part of https://github.com/zokradonh/kopano-docker/pull/366

Signed-off-by: Felix Bartels <felix@host-consultants.de>

* add new dockerfile for dagent

Signed-off-by: Felix Bartels <felix@host-consultants.de>

Makefile

@@ -119,6 +119,12 @@ build-base: ## Build new base image.
 build-core:
 	component=core make build
 
+build-core-dagent:
+	docker build --rm \
+		-f core/Dockerfile.dagent \
+		--build-arg docker_repo=$(docker_repo) \
+		-t $(docker_repo)/kopano_dagent core/
+
 build-helper:
 	component=build make build-simple
 
@@ -209,6 +215,11 @@ tag-core:
 	$(shell docker inspect --format '{{ index .Config.Labels "org.label-schema.version"}}' $(docker_repo)/kopano_core | cut -d+ -f1))
 	component=core make tag-container
 
+tag-dagent:
+	$(eval dagent_version := \
+	$(shell docker inspect --format '{{ index .Config.Labels "org.label-schema.version"}}' $(docker_repo)/kopano_dagent | cut -d+ -f1))
+	component=dagent make tag-container
+
 tag-konnect:
 	$(eval konnect_version := \
 	$(shell docker inspect --format '{{ index .Config.Labels "org.label-schema.version"}}' $(docker_repo)/kopano_konnect))
@@ -298,6 +309,9 @@ publish-base: tag-base
 publish-core: tag-core
 	component=core make publish-container
 
+publish-dagent: tag-dagent
+	component=dagent make publish-container
+
 publish-helper:
 	docker push $(docker_repo)/kopano_build:latest
 

core/Dockerfile.dagent

@@ -0,0 +1,6 @@
+ARG docker_repo=zokradonh
+FROM ${docker_repo}/kopano_core
+
+ENV \
+    EXE=/usr/sbin/kopano-dagent \
+    SERVICE_TO_START=dagent