dotnet build not working inside the container - docker

Question

Since container is not building with the full project I commented docker file as bellow . then I executed manually dotnet build command inside container. it failed like below. But when I build the container from outside from the visual studio it is building fine.
Determining projects to restore...
All projects are up-to-date for restore.
myapp -> /app/build/myapp.dll
myapp -> /app/build/myapp.Views.dll
/bin/sh: 2: /tmp/tmped91456469694a38bc5ed8e7d4b423b1.exec.cmd: docker: not found
/root/.nuget/packages/microsoft.visualstudio.azure.containers.tools.targets/1.11.1/build/Container.targets(97,5): error : Docker is not installed or is not in the current PATH. [/src/myapp/myapp.csproj]
Build FAILED.
/root/.nuget/packages/microsoft.visualstudio.azure.containers.tools.targets/1.11.1/build/Container.targets(97,5): error : Docker is not installed or is not in the current PATH. [/src/myapp/myapp.csproj]
0 Warning(s)
1 Error(s)
Here is the my Dockerfile
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
FROM mcr.microsoft.com/dotnet/aspnet:5.0 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
RUN apt-get update && \
apt-get install -y wget && \
apt-get install -y gnupg2 && \
wget -qO- https://deb.nodesource.com/setup_16.x | bash - && \
apt-get install -y build-essential nodejs
COPY ["myapp/myapp.csproj", "myapp/"]
COPY ["myapp/NuGet.Config", "myapp/"]
RUN dotnet restore "myapp/myapp.csproj" --configfile myapp/NuGet.Config
COPY . .
WORKDIR "/src/myapp"
#RUN dotnet build "myapp.csproj" -c Release -o /app/build
#FROM build AS publish
#RUN dotnet publish "myapp.csproj" -c Release -o /app/publish
#FROM base AS final
#WORKDIR /app
#COPY --from=publish /app/publish .
#ENTRYPOINT ["dotnet", "myapp.dll"]
ENTRYPOINT ["tail", "-f", "/dev/null"]