.NET Core 3.0 + Alpine 3.9 + PublishSingleFile

Dockerfile

# BUILD

FROM mcr.microsoft.com/dotnet/core/sdk:3.0-alpine AS build

WORKDIR /
COPY App/. ./app/

WORKDIR /app
RUN dotnet publish -c Release -r linux-musl-x64 -o out /p:PublishSingleFile=true

# RUN

FROM alpine:3.9 AS runtime

ENV LC_ALL en_US.UTF-8
ENV LANG en_US.UTF-8
ENV DOTNET_RUNNING_IN_CONTAINER true
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT false

RUN apk add --no-cache \
    ca-certificates \
    icu-libs \
    krb5-libs \
    libgcc \
    libintl \
    libssl1.1 \
    libstdc++ \
    zlib

WORKDIR /app
COPY --from=build /app/out ./
ENTRYPOINT ["./App"]