Build dockerimage automatically

.dockerignore

+/.git
+/.idea
+Makefile

.gitlab-ci.yml

+build:
+  stage: build
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
+  script:
+    - mkdir -p /kaniko/.docker
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
+    - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA} --destination $CI_REGISTRY_IMAGE:latest

Dockerfile

+FROM nginx:latest
+COPY . /usr/share/nginx/html

Makefile

+IMAGE := k8r.eu/justjanne/$(shell basename $(shell git remote get-url origin) .git)
+TAGS := $(shell git describe --always --tags HEAD)
+
+.PHONY: build
+build:
+	docker build --pull -t $(IMAGE):$(TAGS) .
+	docker tag $(IMAGE):$(TAGS) $(IMAGE):latest
+	@echo Successfully tagged $(IMAGE):$(TAGS) as latest
+
+.PHONY: push
+push: build
+	docker push $(IMAGE):$(TAGS)
+	docker push $(IMAGE):latest
+	@echo Successfully pushed $(IMAGE):$(TAGS) as latest