Update Drone configuration and Dockerfile to use mirrorred images.

Expecting pipeline to fail.

.drone.yml

@@ -5,29 +5,29 @@ name: build
 
 steps:
   - name: lint
-    image: golangci/golangci-lint:v1.43.0
+    image: code.pztrn.name/containers/mirror/golangci/golangci-lint:v1.46.2
     environment:
       CGO_ENABLED: 0
     commands:
       - golangci-lint run
 
   - name: test
-    image: golang:1.17.3-alpine
+    image: code.pztrn.name/containers/mirror/golang:1.18.3-alpine
     environment:
       CGO_ENABLED: 0
     commands:
       - go test ./...
 
   - name: docker
-    image: plugins/docker
+    image: code.pztrn.name/containers/mirror/plugins/docker:20.13.0
     when:
       branch: ["master"]
     settings:
-      username:
+      registry: code.pztrn.name
-        from_secret: dockerhub_user
+      username: drone
       password:
-        from_secret: dockerhub_password
+        from_secret: drone_secret
-      repo: pztrn/opensaps
+      repo: code.pztrn.name/apps/opensaps
       auto_tag: true
     depends_on:
       - lint

Dockerfile

@@ -1,11 +1,11 @@
-FROM golang:1.13-alpine AS build
+FROM code.pztrn.name/containers/mirror/golang:1.18.3-alpine AS build
 
 WORKDIR /go/src/gitlab.com/pztrn/opensaps
 COPY . .
 
 RUN go build
 
-FROM alpine:3.10
+FROM code.pztrn.name/containers/mirror/alpine:3.16.0
 LABEL maintainer "Stanislav N. <pztrn@pztrn.name>"
 
 COPY --from=build /go/src/gitlab.com/pztrn/opensaps/opensaps /app/opensaps