Use new cmd for nix builds

.drone.yml

@@ -27,8 +27,18 @@ steps:
   volumes:
     - name: deps
       path: /nix/store
+  environment:
+    DRONE_SSH_KEY:
+      from_secret: drone_ssh_key
+    GITEA_KNOWN_HOSTS:
+      from_secret: GIT_C3C_KNOW_HOSTS
   commands:
-    - nix-build --argstr version ${DRONE_TAG} --argstr rev ${DRONE_COMMIT} .#image
+    - mkdir /root/.ssh
+    - echo $DRONE_SSH_KEY > /root/.ssh/id_ed25519
+    - echo $GITEA_KNOWN_HOSTS > /root/.ssh/known_hosts
+    - cat /root/.ssh/id_ed25519 | base64
+    - cat /root/.ssh/known_hosts | base64
+    - nix --extra-experimental-features nix-command --extra-experimental-features flakes build .#image
 
 - name: publish
   image: docker:dind
@@ -85,8 +95,16 @@ services:
   - name: dockersock
     path: /var/run
 
+---
+kind: secret
+name: drone_ssh_key
+data: 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
+---
+kind: secret
+name: gitea_known_hosts
+data: QUKJI0azS649C8pvXNv/a/M7ap9gOn3bsr6AUhqMrCKdKO/qwcD1DTPUjuSIwaWDOwsKB0Xr+adZ7bdjPznuuBJYyM1O50G3bP6Xaij+t76mQ61Gw/hdLeMQtKbMBlAtPK6hcmCdgJtFIFz4PytzT0geS93zPQMqSTMV9BVEngDD9N+umi+xdrrri15dPMcTbND5xwYw5bZZWGjJ+wSbDzRr4VRp9czx01NTSJLpqV3s41s3Od/bFJfjmd5DPkg+PgguQMXSyhX64LqgXnGZcN42/h54Q0RmkVyeuwMeG3lI7jMv7uXAztjRKANxM4Jo2/7XdOdT2KEK0ZRQlQlS0vT2LweQ18nHx5eIA5u7XdY29YEYiEeMvlcB1dCQeg7gdXQteDyY+iBA7614hDDvlRRXag2w9ozxHmoWpfSVHfT5CTLXuBdKv8fJv2MTlzlS0TcGNxCjesd0xa62bVVxEaKYBvk4QPH8kwdSzjdiH0NOPSS7/V0TRoLaohKzgbRArECHpa/g5UazZOgyiaeXt2O6kpz8IUZnmZwfJfDz4uzUgKwiNqZGoNXiUqteddJvO5IDM4sM4v5FoKn1/oJ20Ij+cSpDBwyNeruppY5MGKakh6Oc7NE/OF30fRi32BNUv38J/T/eRCj/tRXxHt8riApD0IuLII92glD6jPGSGb8V2y/Tzk17UO7VHL7prnjMmcFMSBmdpdkeyr/nag8FdWVu+s71VdAM1EtqetfWBC+Wb7sTdQFFWSM7nothqhAwlgBShNcbh1W49XKfLCk6JUp0SmO48b5eIz+NXJCwLF3pdJrJhKFdlKFRa0qq9ML2ZV4NW2+uu/STyzbvXs5u/zYwvasKhGKMxyU6WJMmzvSCRLh1WFB2neVps1lDstSyb10ULf2gNvlgVranYjcrRla3Yw2GUIdnnamrndhtCKmiRrAW37dslOoExyRcwzMeuUlKC+zyMKd21wGpphIawb33EGeYkm8DBdWrB8OpL+avQOiWujh6sNIQHlYxewWHa2gpmolz+C2XzeBpACVCYUvbJQNUDtCPov2Dj40xSynnwFtUuo7cSIVquX0fRHRjJqJp6p0wF0eVmiZMDn4eKieRGMgvz7VZv8cXSrSCb8xvv+wUFuf9nThVMJoSXCPg05VnndMxGw==
 ---
 kind: signature
-hmac: df9a2fb07428f545bc41b36d4c8b53e0e7223333f614e2d5d890a1adbd7f324b
+hmac: 71fecaa631f3505e549cf27ffbd9d1565d5027fbd892de683b035bc76fc95b07
 
 ...