chore(deps): update docker.io/plugins/docker docker tag to v20.15.0

.drone.yml

@@ -66,7 +66,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -132,7 +132,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -198,7 +198,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -264,7 +264,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -328,7 +328,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -392,7 +392,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: false
     dockerfile: Dockerfile
@@ -577,7 +577,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: true
     auto_tag_suffix: amd64
@@ -637,7 +637,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: true
     auto_tag_suffix: arm-v7
@@ -697,7 +697,7 @@ steps:
   image: git.cryptic.systems/volker.raschek/git:1.2.1
 
 - name: build
-  image: docker.io/plugins/docker:20.10.9
+  image: docker.io/plugins/docker:20.15.0
   settings:
     auto_tag: true
     auto_tag_suffix: arm64-v8