Add deb package and nightly distribution (#1977)

- Add publishing automated debian package releases via Cloudsmith.io, which allows evcc to be installed and updated via `apt`
- Add nightly docker (:latest) and deb distribution
- Disable docker builds for every commit on master
- Allow nightly builds to be triggered manually

.goreleaser-nightly.yml

@@ -0,0 +1,60 @@
+dist: release
+release:
+  disable: true
+builds:
+- id: evcc
+  main: main.go
+  flags:
+  - -tags=release
+  ldflags:
+  - -X github.com/evcc-io/evcc/server.Version={{.Version}}.0-nightly.{{.Date}} -X github.com/evcc-io/evcc/server.Commit={{.ShortCommit}} -s -w
+  env:
+  - CGO_ENABLED=0
+  goos:
+  - linux
+  - darwin
+  - windows
+  goarch:
+  - amd64
+  - arm
+  - arm64
+  goarm:
+  - "6"
+archives:
+- builds:
+  - evcc
+  replacements:
+    darwin: macOS
+  format: tar.gz
+  format_overrides:
+  - goos: windows
+    format: zip
+  files:
+  - evcc.dist.yaml
+  name_template: "{{.ProjectName}}_{{ .Version }}.0-nightly.{{.Date}}_{{.Os}}-{{.Arch}}"
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "nightly"
+nfpms:
+  - id: default
+    package_name: evcc
+    file_name_template: "{{.ProjectName}}_{{ .Version }}.0-nightly.{{.Date}}_{{.Os}}-{{.Arch}}"
+
+    homepage:  https://evcc.io
+    description: EV Charge Controller
+    maintainer: andig <cpuidle@gmx.de>
+    license: MIT
+    vendor: evcc.io
+
+    formats:
+    - deb
+
+    contents:
+    - src: ./packaging/init/evcc.service
+      dst: /lib/systemd/system/evcc.service
+
+    scripts:
+      postinstall: ./packaging/scripts/postinstall.sh
+      preremove: ./packaging/scripts/preremove.sh
+      postremove: ./packaging/scripts/postremove.sh