Try to improve image build process

.drone.yml

@@ -3,29 +3,42 @@ name: default
 type: docker
 
 steps:
-  - name: base
-    image: plugins/docker
-    settings:
-      username: nologin
-      password:
+  - name: testdocker
+    image: docker:dind
+    volumes:
+      - name: dockersock
+        path: /var/run
+    commands:
+      - sleep 5 # give docker enough time to start
+      - docker ps -a
+  - name: build
+    image: docker:dind
+    volumes:
+      - name: dockersock
+        path: /var/run
+    environment:
+      DOCKER_PASSWORD:
         from_secret: docker_password
-      repo: rg.fr-par.scw.cloud/jlelse/goblog
-      registry: rg.fr-par.scw.cloud/jlelse
-      tags: latest
-      mirror: https://mirror.gcr.io
-  - name: tools
-    image: plugins/docker
-    settings:
-      username: nologin
-      password:
-        from_secret: docker_password
-      repo: rg.fr-par.scw.cloud/jlelse/goblog
-      registry: rg.fr-par.scw.cloud/jlelse
-      tags: tools
-      dockerfile: Dockerfile.Tools
+    commands:
+      - echo $DOCKER_PASSWORD | docker login --username nologin --password-stdin rg.fr-par.scw.cloud/jlelse
+      - DOCKER_BUILDKIT=1 docker build -f Dockerfile -t rg.fr-par.scw.cloud/jlelse/goblog:latest . --target base
+      - DOCKER_BUILDKIT=1 docker build -f Dockerfile -t rg.fr-par.scw.cloud/jlelse/goblog:tools . --target tools
+      - docker push --all-tags rg.fr-par.scw.cloud/jlelse/goblog
+
+services:
+  - name: docker
+    image: docker:dind
+    privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
+
+volumes:
+  - name: dockersock
+    temp: {}
 
 trigger:
   branch:
     - master
   event:
-    - push
+    - push

Dockerfile

@@ -1,4 +1,5 @@
 FROM golang:1.17-alpine3.15 as build
+
 WORKDIR /app
 RUN apk add --no-cache git gcc musl-dev
 RUN apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main sqlite-dev
@@ -12,7 +13,8 @@ ADD dbmigrations/ /app/dbmigrations/
 RUN go test -cover ./...
 RUN go build -ldflags '-w -s' -o GoBlog
 
-FROM alpine:3.15
+FROM alpine:3.15 as base
+
 WORKDIR /app
 VOLUME /app/config
 VOLUME /app/data
@@ -24,4 +26,9 @@ HEALTHCHECK --interval=1m --timeout=10s CMD GoBlog healthcheck
 RUN apk add --no-cache tzdata tor
 RUN apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main sqlite-dev
 COPY templates/ /app/templates/
-COPY --from=build /app/GoBlog /bin/
+COPY --from=build /app/GoBlog /bin/
+
+FROM base as tools
+
+RUN apk add --no-cache curl bash git
+RUN apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main sqlite

Dockerfile.Tools

@@ -1,4 +0,0 @@
-FROM rg.fr-par.scw.cloud/jlelse/goblog:latest
-
-RUN apk add --no-cache curl bash git
-RUN apk add --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/edge/main sqlite