publish in docker does not work

[farshid3003]

The specified framework 'Microsoft.AspNetCore.App', version '2.2.0' was not found.

[Nordes]

If you run all locally, update dotnet coreon your pc and also clean the bin/obj folders.

[farshid3003]

Just try to clone the code and run docker build.
It was working but it stop working several days ago as base docker image changed.

[farshid3003]

you need yo use official docker image to solve this problem but it steel not easy. look at the end of this page
https://hackernoon.com/docker-writing-a-smaller-net-core-image-6710f4a1562a
it has a solution for 2.2

[Nordes]

Hi, thank you for raising the issue. I'll try to give a look tonight or over the weekend.

[Nordes]

Hi @farshid3003 , for info, I was already using the proper docker images (officials). They changed their URI recently. That being said, I was able to make it work again by adding the runtime in the build. The final image goes to 300mb :/. I am still looking if it could be possible to have a smaller image in the end.

Here's a functional dockerfile.

####################################################
# To build your own image: 
#    > docker build -t honosoft/vuejs-picnic:latest -t honosoft/vuejs-picnic:1.5.0 .
# To run your image once it's ready:
#    > docker run -d -p 8080:80 --name vuejs-picnic honosoft/vuejs-picnic
# To push the image into your docker repository:
#    > docker push honosoft/vuejs-picnic:latest
# If you wish to remove your dangling images, please do the following (not mandatory)
#    > docker rmi $(docker images -f “dangling=true” -q)
####################################################

# Build the container with Source code compiled
FROM mcr.microsoft.com/dotnet/core/sdk:2.2-alpine3.8 as buildenv
WORKDIR /source
RUN apk add --update nodejs nodejs-npm
COPY *.csproj .
RUN dotnet restore
COPY . .
# Publishing will also restore (install) the npm packages.
RUN dotnet publish -c Release -o /app/ -r linux-musl-x64

# Stage 2 - Creating Image for compiled app
FROM mcr.microsoft.com/dotnet/core/runtime:2.2-alpine3.8 as baseimage
RUN addgroup -S coreApp && adduser -S -G coreApp coreApp
# RUN apk add --update nodejs nodejs-npm

# Define other environment variable if needed.
ENV ASPNETCORE_URLS=http://+:$port

WORKDIR /app
COPY --from=buildenv /app .
RUN chown -R coreApp:coreApp /app

# Replace the application name if required.
ENTRYPOINT ["dotnet", "VueJs.Picnic.CSharp.dll"]
EXPOSE $port

[farshid3003]

yes you right, I think for the fix at least do something that works. don't worry about the image. image is not the container :)
so I think now you need to do something like this :

# Build runtime image
FROM microsoft/dotnet:2.2-aspnetcore-runtime As base
WORKDIR /app
EXPOSE 80

FROM microsoft/dotnet:2.2-sdk AS build-env
ENV DEBIAN_FRONTEND noninteractive
ENV DEBIAN_FRONTEND teletype
RUN apt-get update \
    && apt-get -y upgrade \
    && apt-get -y dist-upgrade \
    && apt-get install -y gnupg \
    && apt-get install -y sudo \
    && curl -sL deb.nodesource.com/setup_10.x | sudo -E bash - \
    && apt-get install -y nodejs

# Copy csproj and restore as distinct layers
WORKDIR /src
COPY *.csproj ./
RUN dotnet restore 

# Copy everything else and build
COPY . .
WORKDIR "/src"
RUN dotnet build -c Release -o /app

# publish
FROM build-env AS publish
RUN dotnet publish -c Release -o /app

FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "ProjectName.dll"]

this is working now.

[Nordes]

My example was working (just saying). I tried it locally before posting. I'll try with your proposition later.

[farshid3003]

did you try to run the app after creating docker ?

[farshid3003]

oh sorry I see you change the url yes that should work