Refactor project build process

- Switch to semantic versioning (semver) compatible versioning pattern
  - filenames (where applicable)
  - embedded version metadata
- Generate RPM/DEB packages using nFPM
  - "stable" release packages
  - "dev" release packages
    - provides binaries with `_dev` suffix in order to more easily
      test the impact of new releases
- Add version metadata to Windows executables
  - Use `github.com/tc-hib/go-winres` and `winres.json` file to apply
    version details to Windows executables provided by this project
  - update `.gitignore` to exclude Windows syso files
    - these files are produced when running go generate as part of the
      build process and should not be retained in version control
- Makefile: Compress binaries and use fixed filenames
- Makefile: Refresh recipes to add "standard" set, new package-related
  options
- Build dev/stable releases using go-ci Docker image
- Add Dockerfile to provide "builder" image for Makefile-driven
  release builds
  - copy project/repo content into container at build time
    - explicitly changing owner:group to `builduser`
  - explicitly create new `builduser` user and group
    - this is explicitly used for Docker-based builds
  - set `/builds` as the working directory
  - set Git `safe.directory` logic at system level
- Add new `.dockerignore` file to exclude unnecessary items from build
  image generation
- Update Dependabot configuration to add update monitoring for
  `go-ci-oldstable-build` image
- Update/Add Makefile recipes
  - add separate docker/podman variants of container-based project
    build recipes
    - each uses slightly different logic to achieve rootless container
      execution
    - new recipes
      - `docker-release-build`
      - `docker-dev-build`
      - `docker-packages`
      - `podman-release-build`
      - `podman-dev-build`
      - `podman-packages`
  - explicitly emit the tool used to perform specific tasks
    - this can be useful to help explain why a generated builder image
      does not appear in the `docker image ls` output as a sysadmin
      might expect (if it was instead built with the `docker` command)
  - rename/remove the helper build recipe from the `help` recipe
    output (not useful to call directly)
  - to explicitly run the build container as the `builduser` user that
    is created during build image generation when using Docker to
    build/run containers (Podman uses different settings)
  - to send `xz` compressed output to stdout, then redirect to a
    target file
    - this works around failures to `chmod` and `chgrp` the compressed
      copy of input files when run within a non-root container
  - to explicitly bind mount the `release_assets` path into
    `/builds/release_assets` (using the same Makefile variable)
    read/write (instead of relying on implied read/write access)
  - to explicitly use `/builds` as the working directory
- Update README
  - note decompression step needed after downloading individual
    binaries or building via some Makefile recipes
  - note DEB and RPM packages as alternatives to downloading
    individual binaries

This collection of changes allows reliably building this project using
either Docker or Podman via a "rootless" container.

refs GH-302
refs GH-303
refs GH-304
refs GH-305
refs GH-306
refs GH-307

.dockerignore

@@ -0,0 +1,37 @@
+# Copyright 2023 Adam Chalkley
+#
+# https://github.com/atc0005/dnsc
+#
+# Licensed under the MIT License. See LICENSE file in the project root for
+# full license information.
+
+# Ignore local copy of config file
+/config.toml
+
+# Generated assets are placed here
+/release_assets
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Ignore Visual Studio Code workspace-level settings
+/.vscode
+
+# Ignore go generate produced Windows executable resource files
+*.syso
+
+# Ignore local "scratch" directory of temporary files
+scratch/
+
+# Ignore non-Windows executable
+/dnsc

.gitignore

@@ -17,3 +17,6 @@
 
 # Ignore non-Windows executable
 /dnsc
+
+# Ignore go generate produced Windows executable resource files
+*.syso