Updates Dockerfile layout to support better caching of layers which r…

…educed build time (#4)

Dockerfile:

Moved ARG BUILD_DATE and dependend RUNS to the end, becasue this invalidats the cache for every build run

Added Version numbers to every apt package to specify what is installed and be able to update the image if new versions are released. Specifying a new version will invalidate the cache for the layer and all following ones

Added wildcard for some plattform specific versions where version arn't the same overall

Removed upgrade in base envionment, versions should be used from the specified base imae

removed apt-transport-https package, because it's no longer needed

combined COPY to reduce layers created

rearrange dockerfile for improved cache

specified buster als 10.7 to be able to get notified when 10.8 is released via dependabot and start a new build

Use the slim image instead of the full one

build.yml

readded caching, Dockerfile supports now caching

.github/workflows/build.yml

@@ -96,14 +96,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
-      # cache disabled, becuse the Dockerfile has currently no cache compatible layout
-      # - name: Cache Docker layers
-      #   uses: actions/cache@v2
-      #   with:
-      #     path: /tmp/.buildx-cache
-      #     key: ${{ runner.os }}-buildx-${{ github.sha }}
-      #     restore-keys: |
-      #       ${{ runner.os }}-buildx-
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+             ${{ runner.os }}-buildx-
 
       - name: Build for test full blown amd64 
         uses: docker/build-push-action@v2
@@ -114,9 +113,8 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64
           push: false
-          # cache disabled, becuse the Dockerfile has currently no cache compatible layout
-          # cache-from: type=local,src=/tmp/.buildx-cache
-          # cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
           tags: fhem:${{ steps.buildVars.outputs.VARIANT }}
           build-args: |
             PLATFORM=linux
@@ -168,8 +166,9 @@ jobs:
       - name: Get git vars
         shell: bash
         run: |
-          echo "::set-output name=BRANCH::$(echo "${GITHUB_REF#refs/*/}")"
           echo "::set-output name=IMAGE_VERSION::$( git describe --tags --dirty --match "v[0-9]*")"
+          echo "::set-output name=BRANCH::$(echo "${GITHUB_REF#refs/*/}")"
+
         id: gitVars
 
       - name: Get latest svn revision from remote
@@ -228,14 +227,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
-      # cache disabled, becuse the Dockerfile has currently no cache compatible layout
-      # - name: Cache Docker layers
-      #   uses: actions/cache@v2
-      #   with:
-      #     path: /tmp/.buildx-cache
-      #     key: ${{ runner.os }}-buildx-${{ github.sha }}
-      #     restore-keys: |
-      #     ${{ runner.os }}-buildx-
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+           ${{ runner.os }}-buildx-
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v1 
@@ -252,9 +250,8 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           push: true
-          # cache disabled, becuse the Dockerfile has currently no cache compatible layout
-          # cache-from: type=local,src=/tmp/.buildx-cache
-          # cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
           tags: |
             ghcr.io/${{ github.repository_owner }}/fhem-experimental:${{ steps.buildVars.outputs.TAG_ROLLING }}
 
@@ -286,9 +283,8 @@ jobs:
           file: ./Dockerfile
           platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
           push: true
-          # cache disabled, becuse the Dockerfile has currently no cache compatible layout
-          # cache-from: type=local,src=/tmp/.buildx-cache
-          # cache-to: type=local,dest=/tmp/.buildx-cache
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
           tags: |
             ghcr.io/${{ github.repository_owner }}/fhem-minimal-experimental:${{ steps.buildVars.outputs.TAG_ROLLING }}