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Ivan G
Ivan G

Posted on • Originally published at aloneguid.uk

Install .NET 6 runtime on clean Alpine Linux

These are step-by-step instructions as they seems to be scattered all over the internet. I will start with a completely clean, stock Alpine distro.

Install

Dependencies

Alpine does not have .NET 6 installers or sudo, so you have to install dependencies as admin first:

isb:/home/alg# apk add bash icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib
fetch https://dl-cdn.alpinelinux.org/alpine/v3.15/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.15/community/x86_64/APKINDEX.tar.gz
(1/13) Installing ncurses-terminfo-base (6.3_p20211120-r1)
(2/13) Installing ncurses-libs (6.3_p20211120-r1)
(3/13) Installing readline (8.1.1-r0)
(4/13) Installing bash (5.1.16-r0)
Executing bash-5.1.16-r0.post-install
(5/13) Installing libgcc (10.3.1_git20211027-r0)
(6/13) Installing libstdc++ (10.3.1_git20211027-r0)
(7/13) Installing icu-libs (69.1-r1)
(8/13) Installing krb5-conf (1.0-r2)
(9/13) Installing libcom_err (1.46.4-r0)
(10/13) Installing keyutils-libs (1.6.3-r0)
(11/13) Installing libverto (0.3.2-r0)
(12/13) Installing krb5-libs (1.19.3-r0)
(13/13) Installing libintl (0.21-r0)
Executing busybox-1.34.1-r3.trigger
OK: 49 MiB in 35 packages
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.NET 6

.NET 6 itself does not need admin privileges to install. First, download install script:

isb:~$ wget https://dot.net/v1/dotnet-install.sh
Connecting to dot.net (20.84.181.62:443)
Connecting to dotnet.microsoft.com (13.107.246.64:443)
saving to 'dotnet-install.sh'
dotnet-install.sh    100% |************************************************************************| 57823  0:00:00 ETA
'dotnet-install.sh' saved
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give it exec permission

isb:~$ chmod +x dotnet-install.sh
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and install the latest runtime:

isb:~$ ./dotnet-install.sh -c Current --runtime aspnetcore
dotnet-install: Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:
dotnet-install: - The SDK needs to be installed without user interaction and without admin rights.
dotnet-install: - The SDK installation doesn't need to persist across multiple CI runs.
dotnet-install: To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.

dotnet-install: wget extra options are unavailable for this environment
dotnet-install: Attempting to download using aka.ms link https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/6.0.9/aspnetcore-runtime-6.0.9-linux-musl-x64.tar.gz
dotnet-install: wget extra options are unavailable for this environment
Connecting to dotnetcli.azureedge.net (152.199.19.161:443)
saving to '/tmp/dotnet.XXXKEaFfa'
dotnet.XXXKEaFfa     100% |************************************************************************| 37.5M  0:00:00 ETA
'/tmp/dotnet.XXXKEaFfa' saved
dotnet-install: Extracting zip from https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/6.0.9/aspnetcore-runtime-6.0.9-linux-musl-x64.tar.gz
dotnet-install: Installed version is 6.0.9
dotnet-install: Adding to current process PATH: `/home/alg/.dotnet`. Note: This change will be visible only when sourcing script.
dotnet-install: Note that the script does not resolve dependencies during installation.
dotnet-install: To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install, select your operating system and check the "Dependencies" section.
dotnet-install: Installation finished successfully.
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At this point .net is fully installed.

Add to path

Alpine is using ash shell, so you need to create .profile in your home folder and add the following:

export DOTNET_ROOT=$(pwd)/.dotnet
export PATH=$PATH:$DOTNET_ROOT
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Now reload the shell and you're done.

Short way

  1. Run as su
su
apk add bash icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib
exit
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  1. Run as user
wget https://dot.net/v1/dotnet-install.sh
chmod +x dotnet-install.sh
./dotnet-install.sh -c Current --runtime aspnetcore
vi .profile
# paste 2 lines:
# export DOTNET_ROOT=$(pwd)/.dotnet
# export PATH=$PATH:$DOTNET_ROOT
source .profile
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