'Custom runtime dockerfile for asp.net core 5 with Google cloud error CS1003: Syntax error,

I am trying to publish the Asp.net core 5 application to the google cloud using the visual studio plugin.

app.yaml

runtime: custom
env: flex

manual_scaling:
  instances: 1
resources:
  cpu: 1
  memory_gb: 0.5
  disk_size_gb: 10

Docker file

FROM mcr.microsoft.com/dotnet/aspnet:5.0
WORKDIR /app
# Copy csproj and restore as distinct layers
COPY *.csproj ./
RUN dotnet restore
# Copy everything else and build
COPY . ./
RUN dotnet publish -c Release -o out
# Build runtime image
FROM mcr.microsoft.com/dotnet/aspnet:5.0
WORKDIR /app
COPY --from=build-env /app/out .
EXPOSE 8080
ENV ASPNETCORE_URLS=http://*:8080
ENTRYPOINT ["dotnet", "Falcon-Identity.dll"]

When I publish using publish to google cloud from context menu I am getting the below exception

C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,23): error CS1003: Syntax error, '(' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,23): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,30): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,30): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,31): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,37): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,37): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(1,41): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(2,9): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(2,9): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(2,10): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(3,3): error CS1024: Preprocessor directive expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(4,6): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(4,8): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(4,16): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(4,16): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(4,17): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(5,12): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(6,3): error CS1024: Preprocessor directive expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(7,6): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(7,10): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,12): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,20): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,20): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,21): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,31): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,32): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,34): error CS1001: Identifier expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(8,34): error CS1003: Syntax error, ',' expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(9,3): error CS1024: Preprocessor directive expected [C:\Projects\falcon-identity\Falcon-Identity\Falcon-Identity.csproj]
C:\Projects\falcon-identity\Falcon-Identity\Dockerfile(10,9): error CS1003: Syntax error, ',' e

Solution 1:^[1]

I encountered an identical problem with same exceptions. It was caused by setting the build action on the docker file incorrectly (properties tab - incorrectly set the build action of the file to "C# compiler" instead of "None").

Solution 2:^[2]

I'm able to deploy an ASP.NET 5.0 app successfully to App Engine flex (and then Cloud Run).

I'm less familiar with .NET and so I used a simpler configuration but, I think you should be able to apply what I've done to your case too.

Dockerfile:

FROM mcr.microsoft.com/dotnet/sdk:5.0

WORKDIR /app

COPY ./app/*.csproj .
RUN dotnet restore

COPY ./app/ .

EXPOSE 8080
ENTRYPOINT ["dotnet", "run","--urls=http://+:8080"]

And:

BILLING=...
PROJECT=...
REGION=...

gcloud projects create ${PROJECT}

gcloud beta billing projects link ${PROJECT} \
--billing-account=${BILLING}

gcloud app create \
--region=${REGION} \
--project=${PROJECT}

mkdir ${PWD}/app

# Create 'empty' ASP.NET (web)app
docker run \
--interactive --tty --rm \
--volume=${PWD}/app:/app \
mcr.microsoft.com/dotnet/sdk:5.0 \
dotnet new webapp -o app

# Change generated files to `$whoami`
# Or `$(id -u):$(id -g)`
chown -R $(whoami):$(whoami) ./app

docker build \
--tag=68103677:v1 \
--file=./Dockerfile \
.

docker run \
--interactive --tty --rm \
--publish=8080:8080 \
68103677:latest

# Prove it
curl localhost:8080

# Deploy
gcloud app deploy ./app.yaml \
--project=${PROJECT} \
--quiet

# Test
gcloud app browse \
--project=${PROJECT}

Just for giggles, we can deploy the container image created by the App Engine deployment and deploy the container to Cloud Run:

gcloud services enable run.googleapis.com \
--project=${PROJECT}

# Grab the App Engine image
IMAGE=$(\
  gcloud container images list \
  --repository=us.gcr.io/${PROJECT}/appengine \
  --limit=1 \
  --format="value(name)")

# Deploy it to Cloud Run
# For testing, deploy without authentication
# We need to replicate `ENTRYPOINT` with `--command` and `--args`
NAME="aspnet"
gcloud run deploy ${NAME} \
--image=${IMAGE} \
--command="dotnet" \
--args="run","--urls=http://+:8080" \
--max-instances=1 \
--region=${REGION} \
--project=${PROJECT} \
--allow-unauthenticated

# Grab its endpoint
ENDPOINT=$(\
  gcloud run services describe ${NAME} \
  --project=${PROJECT} \
  --platform=managed \
  --region=${REGION} \
  --format="value(status.address.url)") && \
echo ${ENDPOINT}

# Browse or...
curl ${ENDPOINT}

# Delete it when done
gcloud run services delete ${NAME} \
--region=${REGION} \
--project=${PROJECT} \
--quiet

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Josef Fuksa
Solution 2

'Custom runtime dockerfile for asp.net core 5 with Google cloud error CS1003: Syntax error,

Solution 1:[1]

Solution 2:[2]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]