add docker related files

.drone.jsonnet

@@ -349,6 +349,9 @@ local PipelineNotifications = {
         username: { from_secret: 'matrix_username' },
         password: { from_secret: 'matrix_password' },
       },
+      when: {
+        status: ['success', 'failure'],
+      },
     },
   ],
   depends_on: [

.drone.yml

@@ -472,6 +472,10 @@ steps:
     template: "Status: **{{ build.status }}**<br/> Build: [{{ repo.Owner }}/{{ repo.Name }}]({{ build.link }}) ({{ build.branch }}) by {{ build.author }}<br/> Message: {{ build.message }}"
     username:
       from_secret: matrix_username
+  when:
+    status:
+    - success
+    - failure
 
 trigger:
   ref:
@@ -486,6 +490,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 5501ddb0ffd0774614b7a435cecf5297e3000bb1f1dac8018b1af1cb8787281c
+hmac: 7560e4442691c78855f160abc22966652d7e84dc68136e1d8e1f5a402d38cab7
 
 ...

Dockerfile

@@ -0,0 +1,23 @@
+FROM python:3.8-alpine
+
+LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
+    org.label-schema.name="docker-tidy" \
+    org.label-schema.vcs-url="https://github.com/xoxys/docker-tidy" \
+    org.label-schema.vendor="Robert Kaussow" \
+    org.label-schema.schema-version="1.0"
+
+ENV PY_COLORS=1
+
+ADD dist/docker_tidy-*.whl /
+
+RUN \
+    apk update --no-cache && \
+    rm -rf /var/cache/apk/* && \
+    pip install --upgrade --no-cache-dir pip && \
+    pip install --no-cache-dir --find-links=. docker-tidy && \
+    rm -f docker_tidy-*.whl && \
+    rm -rf /root/.cache/
+
+USER root
+CMD []
+ENTRYPOINT ["/usr/local/bin/docker-tidy"]

manifest.tmpl

@@ -0,0 +1,24 @@
+image: xoxys/docker-tidy:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  - image: xoxys/docker-tidy:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}amd64
+    platform:
+      architecture: amd64
+      os: linux
+
+  - image: xoxys/docker-tidy:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}arm64
+    platform:
+      architecture: arm64
+      os: linux
+      variant: v8
+
+  - image: xoxys/docker-tidy:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}arm
+    platform:
+      architecture: arm
+      os: linux
+      variant: v7