Nix cache settings are duplicated in various places

[steve-chavez]

Problem

See:

postgres/docker/nix/Dockerfile

Lines 3 to 5 in 1772a43

	RUN echo "substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com" >> /etc/nix/nix.conf
	RUN echo "trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=%" >> /etc/nix/nix.conf

postgres/Dockerfile-17

Lines 60 to 61 in 1772a43

	--extra-conf "substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com" \
	--extra-conf "trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="

postgres/scripts/nix-provision.sh

Lines 27 to 28 in 1772a43

	--extra-conf \"substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com\" \
	--extra-conf \"trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=\" " -s /bin/bash root

postgres/Dockerfile-orioledb-17

Lines 60 to 61 in 1772a43

	--extra-conf "substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com" \
	--extra-conf "trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="

postgres/ebssurrogate/scripts/qemu-bootstrap-nix.sh

Lines 85 to 86 in 1772a43

	--extra-conf \"substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com\" \
	--extra-conf \"trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=\" " -s /bin/bash root

postgres/Dockerfile-15

Lines 58 to 59 in 1772a43

	--extra-conf "substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com" \
	--extra-conf "trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="

postgres/ansible/files/admin_api_scripts/pg_upgrade_scripts/initiate.sh

Lines 285 to 286 in 1772a43

	--extra-conf "substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com" \
	--extra-conf "trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="

Solution

Factor this to a single place