- Replace PIHOLE_VERSION with PIHOLE_DOCKER_TAG

- reorder some stuff in the main Dockerfile
- Remove the CORE/WEB/FTL_VERSION args/env vars
- tweaks to GHA build script after some hints from @crazy-max
- always checkout dev versions of Pi-hole for nightly build, also make sure we're using dev branch of this repo
- keep pihole checkout enabled for dev and nightly tags

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

.github/workflows/test-and-build.yaml

@@ -9,7 +9,6 @@ on:
   release:
     types: [published]
 
-
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -31,26 +30,14 @@ jobs:
     steps:
       -
         name: Checkout
+        if: github.event_name != 'schedule'
         uses: actions/checkout@v2
       -
-        name: Calculate the versions to use
-        id: variables
-        run: |
-          # If trigged by schedule then container tag will be nightly, else it's either dev or whatever the tagged version number is
-          PIHOLE_VERSION=$([ "${{ github.event_name == 'schedule' }}" = "true" ] && echo "nightly" || echo "${GITHUB_REF#refs/*/}")
-
-          # If we are building dev branch or nightly then we want to use the development branches of the core components
-          # otherwise they will be unset and the main branches will be pulled
-          if [ "${PIHOLE_VERSION}" = "dev" || "${PIHOLE_VERSION}" = "nightly" ]; then
-            CORE_VERSION=development
-            WEB_VERSION=devel
-            FTL_VERSION=development
-          fi
-
-          echo ::set-output name=CORE_VERSION::${CORE_VERSION}
-          echo ::set-output name=WEB_VERSION::${WEB_VERSION}
-          echo ::set-output name=FTL_VERSION::${FTL_VERSION}
-          echo ::set-output name=PIHOLE_VERSION::${PIHOLE_VERSION}
+        name: Checkout dev branch if we are building nightly
+        if: github.event_name == 'schedule'
+        uses: actions/checkout@v2
+        with:
+          ref: dev
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v1
@@ -69,7 +56,9 @@ jobs:
           flavor: |
             latest=${{ startsWith(github.ref, 'refs/tags/') }}
           tags: |
-            ${{ steps.variables.outputs.PIHOLE_VERSION }}
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=tag
       -
         name: Login to DockerHub
         uses: docker/login-action@v1
@@ -90,10 +79,7 @@ jobs:
           context: .
           platforms: linux/amd64, linux/arm64, linux/386, linux/arm/v7, linux/arm/v6, linux/ppc64le
           build-args: |
-            CORE_VERSION=${{ steps.variables.outputs.CORE_VERSION }}
-            WEB_VERSION=${{ steps.variables.outputs.WEB_VERSION }}
-            FTL_VERSION=${{ steps.variables.outputs.FTL_VERSION }}
-            PIHOLE_VERSION=${{ steps.variables.outputs.PIHOLE_VERSION }}
+            PIHOLE_DOCKER_TAG=${{ steps.meta.outputs.version }}
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}