.Net 5 - Cannot enable globalization in buster (Debian) container - linux

Question

I'm having the same problem as described in https://github.com/dotnet/dotnet-docker/issues/1483 but this time with mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim.
The problem
If a Console.WriteLine($"{251.97:c}") is executed the weird symbol appears instead of $ or €.
Steps to Reproduce
This is my Dockerfile (took out dependcies copy for simplicity):
FROM mcr.microsoft.com/dotnet/aspnet:5.0-buster-slim AS base
# FastReports needs libdgiplus
RUN apt-get update && apt-get install -y libgdiplus
# Disable the invariant mode (set in base image)
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
ENV LC_ALL=es_ES.UTF-8 \
LANG=es_ES.UTF-8 # I've tried also en_US
WORKDIR /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/sdk:5.0-buster-slim AS build
WORKDIR /src
COPY ["MyProject.WebUI/MyProject.WebUI.csproj", "MyProject.WebUI/"]
RUN dotnet restore "MyProject.WebUI/MyProject.WebUI.csproj"
COPY . .
WORKDIR "/src/MyProject.WebUI"
RUN dotnet build "MyProject.WebUI.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "MyProject.WebUI.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "MyProject.WebUI.dll"]
Other Information
Output: 251,97 ¤
Expected: 251,97 €
Output of docker version
Client: Docker Engine - Community
Cloud integration: 1.0.4
Version: 20.10.0
API version: 1.41
Go version: go1.13.15
Git commit: 7287ab3
Built: Tue Dec 8 18:55:31 2020
OS/Arch: windows/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.0
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: eeddea2
Built: Tue Dec 8 18:58:04 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: v1.4.3
GitCommit: 269548fa27e0089a8b8278fc4fc781d7f65a939b
runc:
Version: 1.0.0-rc92
GitCommit: ff819c7e9184c13b7c2607fe6c30ae19403a7aff
docker-init:
Version: 0.19.0
GitCommit: de40ad0
Output of docker info
Client:
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc., v0.9.1-beta3)
buildx: Build with BuildKit (Docker Inc., v0.4.2-docker)
scan: Docker Scan (Docker Inc., v0.5.0)
Server:
Containers: 19
Running: 1
Paused: 0
Stopped: 18
Images: 186
Server Version: 20.10.0
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 269548fa27e0089a8b8278fc4fc781d7f65a939b
runc version: ff819c7e9184c13b7c2607fe6c30ae19403a7aff
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 4.19.128-microsoft-standard
Operating System: Docker Desktop
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 6.068GiB
Name: docker-desktop
ID: G6ZX:FURA:YMMU:OQK7:FFVP:F6UD:SEQR:KJNC:CTHW:TVJY:KNJ6:Z5P7
Docker Root Dir: /var/lib/docker
Debug Mode: true
File Descriptors: 56
Goroutines: 62
System Time: 2020-12-29T05:43:26.9357651Z
EventsListeners: 4
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
WARNING: No blkio weight support
WARNING: No blkio weight_device support
WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
I've tried to solve it by setting the LC_ALL and LANG variables but it seems that does't work.
Thanks

Answer 1

Ok, it seems it was my fault.
I've removed images and containers and it worked as expected.