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fix: make Nix survive home volume mount in devops image #17

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Merged
megheaiulian merged 2 commits into from
Feb 26, 2026
Merged

fix: make Nix survive home volume mount in devops image #17

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69e7805
fix: make Nix survive home volume mount in devops image
megheaiulian Feb 26, 2026
94b316e
fix: use explicit link names to avoid collisions from readlink -f
megheaiulian Feb 26, 2026
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17 changes: 12 additions & 5 deletions images/devops/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -35,15 +35,22 @@ rm -rf /var/lib/apt/lists/*
# Create /nix owned by coder for single-user Nix install
mkdir -p /nix
chown coder:coder /nix

# Enable flakes and nix-command (system-wide, outside home volume)
mkdir -p /etc/nix
echo 'experimental-features = nix-command flakes' > /etc/nix/nix.conf
EOF

USER coder

# Install Nix in single-user mode (no daemon, no systemd required)
RUN curl -L https://nixos.org/nix/install | sh -s -- --no-daemon

# Enable flakes and nix-command
RUN mkdir -p ~/.config/nix && \
echo 'experimental-features = nix-command flakes' > ~/.config/nix/nix.conf

ENV PATH="/home/coder/.nix-profile/bin:${PATH}"
# Symlink nix binaries into /usr/local/bin so they survive the home volume mount.
# We resolve through ~/.nix-profile (which exists at build time) to the real
# /nix/store/… paths that persist outside the home directory.
USER root
RUN for bin in /home/coder/.nix-profile/bin/nix*; do \
ln -s "$(readlink -f "$bin")" "/usr/local/bin/$(basename "$bin")"; \
done
USER coder
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