diff --git a/Taskfile.yml b/Taskfile.yml
index 8bb5f58..e6be29f 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -11,6 +11,8 @@ tasks:
     desc: Builds a service by name.
     prefix: "build image: {{ .CLI_ARGS }}"
     interactive: true
+    preconditions:
+      - test -f {{.CONFIG_ROOT}}/common.env
     cmds:
       - rm -rf {{.SERVICES_ROOT}}/{{.CLI_ARGS}}
       - git clone "git@forge-ssh.karnov.club:spadinastan/{{.CLI_ARGS}}.git" "{{.SERVICES_ROOT}}/{{.CLI_ARGS}}"
@@ -21,6 +23,9 @@ tasks:
   start:
     desc: Starts a service by name.
     prefix: "start: {{ .CLI_ARGS }}"
+    preconditions:
+      - test -f {{.CONFIG_ROOT}}/common.env
+      - test -f {{.CONFIG_ROOT}}/{{.CLI_ARGS}}.env
     cmds:
       - rm -rf {{.SERVICES_ROOT}}/{{.CLI_ARGS}}
       - git clone "git@forge-ssh.karnov.club:spadinastan/{{.CLI_ARGS}}.git" "{{.SERVICES_ROOT}}/{{.CLI_ARGS}}"
@@ -33,6 +38,8 @@ tasks:
   stop:
     desc: Stops a service by name.
     prefix: "stop: {{ .CLI_ARGS }}"
+    preconditions:
+      - test -f {{.CONFIG_ROOT}}/common.env
     cmds:
       - rm -rf {{.SERVICES_ROOT}}/{{.CLI_ARGS}}
       - git clone "git@forge-ssh.karnov.club:spadinastan/{{.CLI_ARGS}}.git" "{{.SERVICES_ROOT}}/{{.CLI_ARGS}}"