semver-tool 3.0.1

semantic version helper tool

semver-tool

Print SemVer version for a git project. Git tags must match v?M.N.P pattern. You can print specific version components using fotmat string.

Full format string is MNPRBD, where:

• M - major
• N - minor
• P - patch
• R - prerelease
• B - build

Usage

Examples:

$ semver-tool
4.1.2-rc.2+git.b10c717
$ semver-tool -f MNPR
4.1.2-rc.2

Use Cases

Build docker images

I use this tool to build docker images using SemVer schema. The flow is this:

• build image:latest with Commit label
• push it as image:M.N.P-R
• push it as image:M.N.P
• push it as image:M.N

My build script has this code

current=$(semver_tool -f MNPR)
docker build --label Commit=$(semver_tool) -t image:$current
docker tag image:$current image $(semver_tool -f MNP)
docker tag image:$current image $(semver_tool -f MN)

which results in these images

image   1.2.3-rc.2
image   1.2.3
image   1.2

Each image has Commit label with semver description, eg, 1.2.3-rc.2+git.22eeff