use kaniko to build container

.editorconfig

@@ -1,9 +0,0 @@
-root = true
-
-[*]
-end_of_line = lf
-charset = utf-8
-trim_trailing_whitespace = true
-insert_final_newline = true
-indent_style = space
-indent_size = 4

.gitlab-ci.yml

@@ -1,13 +1,21 @@
+stages:
+  - build
+
 variables:
-    IMAGE_NAME: thallian/roundcube
+  CI_REGISTRY_IMAGE: thallian/roundcube
 
 build:
   stage: build
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
   script:
-        - docker login -u $DOCKER_USER -p $DOCKER_PASSWORD $DOCKER_REGISTRY
+    - mkdir -p /kaniko/.docker
-        - docker build -t $IMAGE_NAME:$CI_COMMIT_SHA .
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(printf "%s:%s" "$CI_REGISTRY_USER" "$CI_REGISTRY_PASSWORD" | base64 | tr -d '\n')\"}}}" > /kaniko/.docker/config.json
-        - docker build -t $IMAGE_NAME:$CI_COMMIT_REF_NAME .
+    - >-
-        - docker build -t $IMAGE_NAME:latest .
+      /kaniko/executor
-        - docker push $IMAGE_NAME:$CI_COMMIT_SHA
+      --context "$CI_PROJECT_DIR"
-        - docker push $IMAGE_NAME:$CI_COMMIT_REF_NAME
+      --dockerfile "$CI_PROJECT_DIR/Dockerfile"
-        - docker push $IMAGE_NAME:latest
+      --destination "$CI_REGISTRY_IMAGE:$CI_COMMIT_SHA"
+      --destination "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME"
+      --destination "$CI_REGISTRY_IMAGE:latest"

rootfs/etc/s6-overlay/s6-rc.d/dbinit/run

@@ -0,0 +1 @@
+dbinit

rootfs/etc/s6-overlay/s6-rc.d/dbinit/type

@@ -0,0 +1 @@
+oneshot

rootfs/etc/s6-overlay/s6-rc.d/nginx/dependencies

@@ -0,0 +1,2 @@
+confd
+dbinit

rootfs/etc/s6-overlay/s6-rc.d/nginx/run

@@ -0,0 +1,3 @@
+#!/usr/bin/with-contenv sh
+
+exec nginx -g "daemon off;"

rootfs/etc/s6-overlay/s6-rc.d/nginx/type

@@ -0,0 +1 @@
+longrun