Added goreleaser

.github/workflows/release.yaml

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+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '^1.22'
+
+      - uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: goreleaser/goreleaser-action@v6
+        if: success() && startsWith(github.ref, 'refs/tags/')
+        with:
+          version: '~> v2'
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yaml

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+---
+version: 2
+project_name: oauth-mock-server
+builds:
+  - env: [CGO_ENABLED=0]
+    goos:
+      - linux
+      - windows
+      - darwin
+    goarch:
+      - amd64
+      - arm64
+dockers:
+  - image_templates: ["ghcr.io/shaharia-lab/oauth-mock-server:{{ .Version }}"]
+    dockerfile: goreleaser.dockerfile
+    build_flag_templates:
+      - --label=org.opencontainers.image.title={{ .ProjectName }}
+      - --label=org.opencontainers.image.description={{ .ProjectName }}
+      - --label=org.opencontainers.image.url=https://github.com/shaharia-lab/oauth-mock-server
+      - --label=org.opencontainers.image.source=https://github.com/shaharia-lab/oauth-mock-server
+      - --label=org.opencontainers.image.version={{ .Version }}
+      - --label=org.opencontainers.image.revision={{ .FullCommit }}
+      - --label=org.opencontainers.image.licenses=MIT
+nfpms:
+  - maintainer: Shaharia Lab OÜ <hello@shaharialab.com>
+    description: Setup and run an OAuth mock server for testing purposes
+    homepage: https://github.com/shaharia-lab/oauth-mock-server
+    license: MIT
+    formats:
+      - deb
+      - rpm
+      - apk

goreleaser.dockerfile

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+# This dockerfile is only used to build the backend image for the application using goreleaser.
+FROM alpine:3.12
+COPY oauth-mock-server /app/oauth-mock-server
+ENTRYPOINT ["/app/oauth-mock-server"]