build arm32v7 docker image (#842)

* build arm32v7 docker image

* fix

.github/workflows/docker.yml

@@ -39,6 +39,10 @@ jobs:
             path: 'vaapi/'
             suffix: '-vaapi'
             qemu: false
+          - name: arm32v7
+            path: 'arm32v7/'
+            suffix: '-arm'
+            qemu: true
           - name: arm64
             path: 'arm64/'
             suffix: '-arm64'
@@ -75,7 +79,7 @@ jobs:
           tags: |
             jasongdove/ersatztv:${{ inputs.base_version }}${{ matrix.suffix }}
             jasongdove/ersatztv:${{ inputs.tag_version }}${{ matrix.suffix }}
-        if: ${{ matrix.name != 'arm64' }}
+        if: ${{ matrix.name != 'arm64' && matrix.name != 'arm32v7' }}
 
       - name: Build and push
         uses: docker/build-push-action@v3
@@ -91,3 +95,18 @@ jobs:
             jasongdove/ersatztv:${{ inputs.base_version }}${{ matrix.suffix }}
             jasongdove/ersatztv:${{ inputs.tag_version }}${{ matrix.suffix }}
         if: ${{ matrix.name == 'arm64' }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          builder: ${{ steps.docker-buildx.outputs.name }}
+          context: .
+          file: ./docker/${{ matrix.path }}Dockerfile
+          push: true
+          platforms: 'linux/arm/v7'
+          build-args: |
+            INFO_VERSION=${{ inputs.info_version }}-docker${{ matrix.suffix }}
+          tags: |
+            jasongdove/ersatztv:${{ inputs.base_version }}${{ matrix.suffix }}
+            jasongdove/ersatztv:${{ inputs.tag_version }}${{ matrix.suffix }}
+        if: ${{ matrix.name == 'arm32v7' }}

docker/arm32v7/Dockerfile

@@ -0,0 +1,48 @@
+FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal-arm32v7 AS dotnet-runtime
+
+FROM linuxserver/ffmpeg:arm32v7-version-4.4-cli AS runtime-base
+COPY --from=dotnet-runtime /usr/share/dotnet /usr/share/dotnet
+RUN apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y libicu-dev \
+    tzdata \
+    fontconfig \
+    fonts-dejavu \
+    libgdiplus
+
+# https://hub.docker.com/_/microsoft-dotnet
+FROM mcr.microsoft.com/dotnet/sdk:6.0-focal-arm32v7 AS build
+RUN apt-get update && apt-get install -y ca-certificates
+RUN curl -fsSL https://deb.nodesource.com/setup_14.x | bash -
+RUN apt-get install -y nodejs
+WORKDIR /source
+
+# copy csproj and restore as distinct layers
+COPY *.sln .
+COPY nuget.config .
+COPY lib/nuget/* ./lib/nuget/
+COPY artwork/* ./artwork/
+COPY ErsatzTV/*.csproj ./ErsatzTV/
+COPY ErsatzTV/client-app/package*.json ./ErsatzTV/client-app/
+COPY ErsatzTV.Application/*.csproj ./ErsatzTV.Application/
+COPY ErsatzTV.Core/*.csproj ./ErsatzTV.Core/
+COPY ErsatzTV.FFmpeg/*.csproj ./ErsatzTV.FFmpeg/
+COPY ErsatzTV.Infrastructure/*.csproj ./ErsatzTV.Infrastructure/
+RUN dotnet restore -r linux-arm ErsatzTV/
+
+# copy everything else and build app
+COPY ErsatzTV/. ./ErsatzTV/
+COPY ErsatzTV.Application/. ./ErsatzTV.Application/
+COPY ErsatzTV.Core/. ./ErsatzTV.Core/
+COPY ErsatzTV.FFmpeg/. ./ErsatzTV.FFmpeg/
+COPY ErsatzTV.Infrastructure/. ./ErsatzTV.Infrastructure/
+WORKDIR /source/ErsatzTV
+ARG INFO_VERSION="unknown"
+RUN dotnet publish ErsatzTV.csproj --framework net6.0 -c release -o /app --runtime linux-arm --no-self-contained --no-restore -p:DebugType=Embedded -p:PublishSingleFile=false -p:PublishTrimmed=false -p:InformationalVersion=${INFO_VERSION}
+          
+# final stage/image
+FROM runtime-base
+ENV FONTCONFIG_PATH=/etc/fonts
+RUN fc-cache update
+WORKDIR /app
+EXPOSE 8409
+COPY --from=build /app ./
+ENTRYPOINT ["./ErsatzTV"]