example to build local container with just some added plugins (#350)

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

Makefile

@@ -47,7 +47,7 @@ help:
 all: build-all
 
 build-all:
-	make $(shell grep -o ^build-.*: Makefile | grep -Ev 'build-all|build-simple|build-builder|build-webapp-demo' | uniq | sed s/://g | xargs)
+	make $(shell grep -o ^build-.*: Makefile | grep -Ev 'build-all|build-simple|build-builder|build-webapp-demo|build-webapp-plugins' | uniq | sed s/://g | xargs)
 
 .PHONY: build
 build: component ?= base
@@ -174,6 +174,11 @@ build-webapp-demo: ## Replaces the actual kopano_webapp container with one that
 		-f webapp/Dockerfile.demo \
 		-t $(docker_repo)/kopano_webapp webapp/
 
+build-webapp-plugins: ## Example for a custom image to install Kopano WebApp plugins
+	docker build --rm \
+		-f webapp/Dockerfile.plugins \
+		-t $(docker_repo)/kopano_webapp webapp/
+
 build-zpush:
 	component=zpush make build
 

webapp/Dockerfile.plugins

@@ -0,0 +1,6 @@
+ARG docker_repo=zokradonh
+FROM ${docker_repo}/kopano_webapp
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    kopano-webapp-plugin-mdm \
+    && rm -rf /var/cache/apt /var/lib/apt/lists