Turn nightly tag generation into helper script that can run locally

.github/workflows/build-apps.yml

@@ -383,7 +383,7 @@ jobs:
           # see https://github.com/actions/checkout/issues/1471
           git fetch --prune --unshallow --tags
           export TAG="nightly-${VERSION}"
-          export PREVIOUS_TAG=$(git describe --tags --match="nightly-v[0-9]*" --abbrev=0)
+          export PREVIOUS_TAG=$(git tag --list --sort=-committerdate nightly-v* | head -n2 | tail -n1)
           export NOTES=$(./scripts/get-nightly-changelog.sh)
           yarn files:set-notes
 

.github/workflows/tag-nightly.yml

@@ -31,9 +31,8 @@ jobs:
 
       - name: Push tag
         run: |
-          VERSION_NO_V=$(date +'%-y.%-m.%-d')
-          TAG="nightly-v$VERSION_NO_V"
           git config --local user.email "github-actions[bot]@users.noreply.github.com"
           git config --local user.name "github-actions[bot]"
+          TAG=$(./scripts/get-nightly-tag.sh)
           git tag $TAG
           git push origin tag $TAG

README.md

@@ -163,10 +163,10 @@ https://github.com/KittyCAD/modeling-app/issues/new
 
 #### 2. Push a new tag
 
-Create a new tag and push it to the repo. The `semantic-release.sh` script will automatically bump the minor part, which we use the most. For instance going from `v0.27.0` to `v0.28.0`.
+Create a new tag and push it to the repo. The `scripts/get-semantic-release-tag.sh` script will automatically bump the minor part, which we use the most. For instance going from `v0.27.0` to `v0.28.0`.
 
 ```
-VERSION=$(./scripts/semantic-release.sh)
+VERSION=$(./scripts/scripts/get-semantic-release-tag.sh)
 git tag $VERSION
 git push origin --tags
 ```

scripts/get-nightly-tag.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+VERSION_NO_V=$(date +'%-y.%-m.%-d')
+echo "nightly-v$VERSION_NO_V"

scripts/semantic-release.sh → scripts/get-semantic-release-tag.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # Requires access to an environment variable GH_TOKEN
 # If you are in the path of the git repository the gh release list will automatically point to that git repo
 # aka cd /some/path/modeling-app