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-rw-r--r--Dockerfile.debian12
1 files changed, 10 insertions, 2 deletions
diff --git a/Dockerfile.debian b/Dockerfile.debian
index 3993f22..8bd71de 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -21,8 +21,16 @@ RUN useradd -m -s /bin/bash git
# Create the repositories directory and set appropriate permissions
RUN mkdir -p /repositories && chown git:git /repositories
-# Disallow password authentication for security reasons
-RUN echo "PasswordAuthentication no" >> /etc/ssh/sshd_config
+# Remove auto-generated SSH host keys so they are not baked into the image.
+# Keys will be generated at container startup and persisted via a volume mount.
+RUN rm -f /etc/ssh/ssh_host_*
+
+# Disallow password authentication for security reasons.
+# Point sshd to the persistent host key location.
+RUN echo "PasswordAuthentication no" >> /etc/ssh/sshd_config && \
+ echo "HostKey /run/ssh/ssh_host_rsa_key" >> /etc/ssh/sshd_config && \
+ echo "HostKey /run/ssh/ssh_host_ecdsa_key" >> /etc/ssh/sshd_config && \
+ echo "HostKey /run/ssh/ssh_host_ed25519_key" >> /etc/ssh/sshd_config
# Copy the entrypoint script into the container
COPY entrypoint.bash /