feat(cicd): add two new pipelines responsible for pushing docker image to docker hub and Dockerfile (#7)

Reviewed-on: #7

.dockerignore

@@ -14,5 +14,4 @@ build
 k8s
 internal/tools
 .commitlintrc.yml
-additional_envs.sh
 skaffold.yaml

.drone.yml

@@ -53,3 +53,52 @@ trigger:
     - pull_request
   branch:
     - master
+
+---
+kind: pipeline
+type: docker
+name: linux-amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: publish
+    image: plugins/docker
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: kichiyaki/notificationarr
+      auto_tag: true
+      auto_tag_suffix: linux-amd64
+      dockerfile: Dockerfile
+
+trigger:
+  event:
+    - tag
+---
+kind: pipeline
+type: docker
+name: manifest
+
+steps:
+  - name: manifest
+    image: plugins/manifest
+    settings:
+      auto_tag: "true"
+      ignore_missing: "true"
+      spec: manifest.tmpl
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+
+trigger:
+  event:
+    - tag
+
+depends_on:
+  - linux-amd64

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.18.4-alpine3.16 as builder
+
+WORKDIR /notificationarr
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 go build -trimpath -o notificationarr .
+
+######## Start a new stage from scratch #######
+FROM alpine:3.16
+
+RUN apk --no-cache add ca-certificates
+
+COPY --from=builder /notificationarr/notificationarr /usr/bin/
+
+EXPOSE 9234/tcp
+
+HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
+    CMD wget --no-verbose --tries=1 --spider http://localhost:9234/health || exit 1
+
+CMD ["notificationarr"]

manifest.tmpl

@@ -0,0 +1,13 @@
+image: kichiyaki/notificationarr:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  -
+    image: kichiyaki/notificationarr:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+    platform:
+      architecture: amd64
+      os: linux