dist/archlinux: download known_hosts from Arch Linux infra

.github/workflows/distribute-archlinux.yml

@@ -29,7 +29,6 @@ jobs:
             AUR_FOLDER=./flood
             AUR_REPO=ssh://aur@aur.archlinux.org/nodejs-flood.git
             AUR_USER=jesec
-            "AUR_FINGERPRINT=""aur.archlinux.org ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBLMiLrP8pVi5BFX2i3vepSUnpedeiewE5XptnUnau+ZoeUOPkpoCgZZuYfpaIQfhhJJI5qgnjJmr4hyJbe/zxow="""
             "COMMIT_USERNAME=""github-actions[bot]"""
             "COMMIT_EMAIL=""41898282+github-actions[bot]@users.noreply.github.com"""
             "COMMIT_MESSAGE=""Automatic update"""

distribution/archlinux/Dockerfile.aur

@@ -1,6 +1,5 @@
 FROM archlinux
 
-ARG AUR_FINGERPRINT
 ARG AUR_FOLDER
 ARG AUR_REPO
 ARG AUR_KEY
@@ -9,7 +8,7 @@ ARG COMMIT_USERNAME
 ARG COMMIT_EMAIL
 ARG COMMIT_MESSAGE
 
-RUN pacman -Sy --noconfirm base-devel openssh git pacman-contrib
+RUN pacman -Sy --noconfirm base-devel curl openssh git pacman-contrib
 
 RUN useradd -m ${AUR_USER}
 
@@ -18,7 +17,7 @@ USER ${AUR_USER}
 WORKDIR /home/${AUR_USER}
 
 RUN mkdir .ssh
-RUN echo "${AUR_FINGERPRINT}" > .ssh/known_hosts
+RUN curl https://gitlab.archlinux.org/archlinux/infrastructure/-/raw/master/docs/ssh-known_hosts.txt?inline=false > .ssh/known_hosts
 RUN echo "${AUR_KEY}" > .ssh/id_rsa
 RUN chmod 0400 .ssh/id_rsa