diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 426b341..39c5c9a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -108,6 +108,10 @@ jobs:
         echo "RUN_CFG__NOW=$(date +'%Y%m%d_%H%M%S')" >> $GITHUB_ENV
         echo "RUN_CFG__LOGS_DIR=logs-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
         echo "RUN_CFG__DOCKER_IMAGE_NAME=tests-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
+        echo "RUN_CFG__NETWORK_NAME=network-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
+        echo "RUN_CFG__MACHINE1_NAME=machine1-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
+        echo "RUN_CFG__MACHINE2_NAME=machine2-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
+        echo "RUN_CFG__SSH_KEY_NAME=id_ed25519-${{ env.BASE_SIGN }}" >> $GITHUB_ENV
         echo "---------- [$GITHUB_ENV]"
         cat $GITHUB_ENV
     - name: Checkout
@@ -118,11 +122,91 @@ jobs:
       run: chmod -R 777 "${{ env.RUN_CFG__LOGS_DIR }}"
     - name: Build local image ${{ matrix.alpine }}
       run: docker build --build-arg PYTHON_VERSION="${{ matrix.python }}" -t "${{ env.RUN_CFG__DOCKER_IMAGE_NAME }}" -f Dockerfile--${{ matrix.platform }}.tmpl .
-    - name: Run
-      run: docker run -t -v ${{ github.workspace }}/${{ env.RUN_CFG__LOGS_DIR }}:/home/test/testgres/logs "${{ env.RUN_CFG__DOCKER_IMAGE_NAME }}"
+
+    - name: Generate temporary SSH Key pair for CI
+      run: |
+        # Generate a key without a password directly on the GitHub Actions host
+        ssh-keygen -q -t ed25519 -N "" -f ${{ github.workspace }}/${{ env.RUN_CFG__SSH_KEY_NAME }}
+
+    - name: Setup network
+      run: |
+        docker network create ${{ env.RUN_CFG__NETWORK_NAME }}
+
+    - name: Run machine2 (for remote operations)
+      run: |
+        #
+        # "- sleep infinity" is a right command. Docker ignores "-" and runs "sleep infinity".
+        #
+        docker run -d -t \
+          --network ${{ env.RUN_CFG__NETWORK_NAME }} \
+          --name ${{ env.RUN_CFG__MACHINE2_NAME }} \
+          "${{ env.RUN_CFG__DOCKER_IMAGE_NAME }}" \
+          sleep infinity
+
+        echo "Waiting for container ${{ env.RUN_CFG__MACHINE2_NAME }} to start ..."
+        
+        # Set the timeout using the attempt counter
+        MAX_ATTEMPTS=50
+        ATTEMPT=0
+        
+        until [ "$(docker container inspect --format '{{.State.Running}}' "${{ env.RUN_CFG__MACHINE2_NAME }}")" = "true" ]; do
+          ATTEMPT=$((ATTEMPT + 1))
+          if [ $ATTEMPT -ge $MAX_ATTEMPTS ]; then
+            echo "Error: Container did not start within the allotted time (timeout)!"
+            exit 1
+          fi
+          sleep 0.2
+        done
+        
+        echo "Container successfully launched in $((ATTEMPT * 2 / 10)) second(s)!"
+
+        #
+        # Setup authorized_keys
+        #
+        cat ${{ github.workspace }}/${{ env.RUN_CFG__SSH_KEY_NAME }}.pub | \
+        docker exec -i -u test ${{ env.RUN_CFG__MACHINE2_NAME }} sh -c " \
+          cat >> /home/test/.ssh/authorized_keys && \
+          chmod 600 /home/test/.ssh/authorized_keys \
+        "
+
+        #
+        # Log status
+        #
+        docker exec -u root ${{ env.RUN_CFG__MACHINE2_NAME }} sh -c "
+          echo '--- INSIDE CONTAINER OS ---' && \
+          cat /etc/os-release && \
+          echo '--- INSIDE CONTAINER .SSH ---' && \
+          ls -la /home/test/.ssh/ \
+        "
+
+    - name: Run machine1 (main test container)
+      run: |
+        # Launch the main container, passing the private key to the .ssh folder of the test user.
+        # Pass environment variables so Python tests know where to start.
+        # Added the --rm flag so that the container is automatically deleted after the tests are completed
+        docker run --rm -t \
+          --network ${{ env.RUN_CFG__NETWORK_NAME }} \
+          --name ${{ env.RUN_CFG__MACHINE1_NAME }} \
+          -v ${{ github.workspace }}/${{ env.RUN_CFG__LOGS_DIR }}:/home/test/testgres/logs \
+          -v ${{ github.workspace }}/${{ env.RUN_CFG__SSH_KEY_NAME }}:/home/test/testgres/id_ed25519_test:ro \
+          -e TEST_CFG__REMOTE_HOST="${{ env.RUN_CFG__MACHINE2_NAME }}" \
+          -e TEST_CFG__REMOTE_PORT="22" \
+          -e TEST_CFG__REMOTE_USERNAME="test" \
+          -e TEST_CFG__REMOTE_SSH_KEY="/home/test/testgres/id_ed25519_test" \
+          "${{ env.RUN_CFG__DOCKER_IMAGE_NAME }}"
+
     - name: Upload Logs
       uses: actions/upload-artifact@v7
       if: always() # IT IS IMPORTANT!
       with:
         name: testgres.os_ops--test_logs--${{ env.RUN_CFG__NOW }}-${{ env.BASE_SIGN }}-id${{ github.run_id }}
         path: "${{ env.RUN_CFG__LOGS_DIR }}/"
+
+    - name: Cleanup Docker resources
+      if: always() # Ensures that the step is executed regardless of the result of the task
+      run: |
+        echo "=== Garbage Collection ==="
+        # Force kill the background machine (the -f flag will stop it if it is running)
+        docker rm -f "${{ env.RUN_CFG__MACHINE2_NAME }}" || true
+        # Delete the network (it will be deleted successfully, since all containers in it have already been destroyed)
+        docker network rm "${{ env.RUN_CFG__NETWORK_NAME }}" || true
diff --git a/Dockerfile--alpine.tmpl b/Dockerfile--alpine.tmpl
index 43190d2..d8bbc73 100644
--- a/Dockerfile--alpine.tmpl
+++ b/Dockerfile--alpine.tmpl
@@ -37,26 +37,48 @@ WORKDIR /home/test/testgres
 RUN echo "test ALL=(ALL:ALL) NOPASSWD:ALL" >> /etc/sudoers
 
 # THIS CMD IS NEEDED TO CONNECT THROUGH SSH WITHOUT PASSWORD
-RUN sh -c "echo "test:*" | chpasswd -e"
+RUN echo "test:*" | chpasswd -e
 
-USER test
+RUN chmod 700 /home/test/ && \
+    mkdir -p /home/test/.ssh && \
+    chown -R test:test /home/test/.ssh
 
-# THIS CMD IS NEEDED TO CONNECT THROUGH SSH WITHOUT PASSWORD
-RUN chmod 700 ~/
-
-RUN mkdir -p ~/.ssh
-#RUN chmod 700 ~/.ssh
+#
+# \"$@\"
+#   - quote is important!
+#   - "DUMMY-DUMMY-DUMMY" will be ignored. Do not ask me "why?". AXEZ.
+#
+ENTRYPOINT ["sh", "-c", " \
+    set -eux; \
+    echo 'SYSTEM START: PREPARING SSH'; \
+    /usr/sbin/sshd; \
+    ls -la /home/test/.ssh/; \
+    \"$@\" \
+", "DUMMY-DUMMY-DUMMY"]
 
-ENTRYPOINT sh -c " \
+# Run tests by default (master machine role)
+CMD ["bash", "-c", " \
 set -eux; \
-echo HELLO FROM ENTRYPOINT; \
-echo HOME DIR IS [`realpath ~/`]; \
-echo WORK DIR IS [$(pwd)]; \
-ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ''; \
-cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
-chmod 600 ~/.ssh/authorized_keys; \
-ls -la ~/.ssh/; \
-sudo /usr/sbin/sshd; \
-ssh-keyscan -H localhost >> ~/.ssh/known_hosts; \
-ssh-keyscan -H 127.0.0.1 >> ~/.ssh/known_hosts; \
-bash run_tests3.sh;"
+echo \"HOME DIR IS [`realpath ~/`]\"; \
+echo \"WORK DIR IS [$(pwd)]\"; \
+if [ ! -f /home/test/.ssh/id_rsa ]; then \
+    su test -c \"ssh-keygen -t rsa -f /home/test/.ssh/id_rsa -q -N ''\"; \
+    su test -c \"cat /home/test/.ssh/id_rsa.pub >> /home/test/.ssh/authorized_keys\"; \
+    chmod 600 /home/test/.ssh/authorized_keys; \
+fi; \
+ls -la /home/test/.ssh/; \
+su test -c \"ssh-keyscan -H localhost >> /home/test/.ssh/known_hosts\"; \
+su test -c \"ssh-keyscan -H 127.0.0.1 >> /home/test/.ssh/known_hosts\"; \
+if [ -n \"${TEST_CFG__REMOTE_HOST:-}\" ]; then \
+    su test -c \"ssh-keyscan -H ${TEST_CFG__REMOTE_HOST} >> /home/test/.ssh/known_hosts\"; \
+fi; \
+if [ -n \"${TEST_CFG__REMOTE_SSH_KEY:-}\" ]; then \
+    cp \"${TEST_CFG__REMOTE_SSH_KEY}\" \"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    export TEST_CFG__REMOTE_SSH_KEY=\"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    chown test:test \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    chmod 600 \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    ls -la /home/test/.ssh/; \
+fi; \
+ls -la ./; \
+su test -c \"bash ./run_tests3.sh\"; \
+"]
diff --git a/Dockerfile--altlinux_10.tmpl b/Dockerfile--altlinux_10.tmpl
index 4c96398..2e58975 100644
--- a/Dockerfile--altlinux_10.tmpl
+++ b/Dockerfile--altlinux_10.tmpl
@@ -52,17 +52,47 @@ RUN chmod 700 /home/test/ && \
     mkdir -p /home/test/.ssh && \
     chown -R test:test /home/test/.ssh
 
-USER test
+#
+# \"$@\"
+#   - quote is important!
+#   - "DUMMY-DUMMY-DUMMY" will be ignored. Do not ask me "why?". AXEZ.
+#
+ENTRYPOINT ["sh", "-c", " \
+    set -eux; \
+    echo 'SYSTEM START: PREPARING SSH'; \
+    /usr/sbin/sshd; \
+    ls -la /home/test/.ssh/; \
+    \"$@\" \
+", "DUMMY-DUMMY-DUMMY"]
 
-ENTRYPOINT sh -c " \
+# Run tests by default (master machine role)
+CMD ["bash", "-c", " \
 set -eux; \
-echo HELLO FROM ENTRYPOINT; \
-echo HOME DIR IS [`realpath ~/`]; \
-sudo /usr/sbin/sshd; \
-ssh-keyscan -H localhost >> ~/.ssh/known_hosts; \
-ssh-keyscan -H 127.0.0.1 >> ~/.ssh/known_hosts; \
-ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ''; \
-cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
-chmod 600 ~/.ssh/authorized_keys; \
-ls -la ~/.ssh/; \
-TEST_FILTER=\"\" bash ./run_tests3.sh;"
+echo \"HOME DIR IS [`realpath ~/`]\"; \
+echo \"WORK DIR IS [$(pwd)]\"; \
+if [ ! -f /home/test/.ssh/id_rsa ]; then \
+    su -c \"ssh-keygen -t rsa -f /home/test/.ssh/id_rsa -q -N ''\" test; \
+    su -c \"cat /home/test/.ssh/id_rsa.pub >> /home/test/.ssh/authorized_keys\" test; \
+    chmod 600 /home/test/.ssh/authorized_keys; \
+fi; \
+ls -la /home/test/.ssh/; \
+su -c \"ssh-keyscan -H localhost >> /home/test/.ssh/known_hosts\" test; \
+su -c \"ssh-keyscan -H 127.0.0.1 >> /home/test/.ssh/known_hosts\" test; \
+if [ -n \"${TEST_CFG__REMOTE_HOST:-}\" ]; then \
+    su -c \"ssh-keyscan -H ${TEST_CFG__REMOTE_HOST} >> /home/test/.ssh/known_hosts\" test; \
+fi; \
+if [ -n \"${TEST_CFG__REMOTE_SSH_KEY:-}\" ]; then \
+    cp \"${TEST_CFG__REMOTE_SSH_KEY}\" \"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    export TEST_CFG__REMOTE_SSH_KEY=\"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    chown test:test \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    chmod 600 \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    ls -la /home/test/.ssh/; \
+fi; \
+ls -la ./; \
+# AUTOMATIC TRANSFER: Save all TEST_CFG__xxx variables to a temporary file \
+(env | grep '^TEST_CFG__' | sed 's/^/export /' || echo '') > ./test_cfg_env.sh; \
+chown test:test ./test_cfg_env.sh; \
+cat ./test_cfg_env.sh; \
+# Run su -, pull in the file with variables and start the tests \
+su - test -c \"cd /home/test/testgres && source ./test_cfg_env.sh && bash ./run_tests3.sh\"; \
+"]
diff --git a/Dockerfile--altlinux_11.tmpl b/Dockerfile--altlinux_11.tmpl
index 198414b..b91bca7 100644
--- a/Dockerfile--altlinux_11.tmpl
+++ b/Dockerfile--altlinux_11.tmpl
@@ -53,17 +53,47 @@ RUN chmod 700 /home/test/ && \
     mkdir -p /home/test/.ssh && \
     chown -R test:test /home/test/.ssh
 
-USER test
+#
+# \"$@\"
+#   - quote is important!
+#   - "DUMMY-DUMMY-DUMMY" will be ignored. Do not ask me "why?". AXEZ.
+#
+ENTRYPOINT ["sh", "-c", " \
+    set -eux; \
+    echo 'SYSTEM START: PREPARING SSH'; \
+    /usr/sbin/sshd; \
+    ls -la /home/test/.ssh/; \
+    \"$@\" \
+", "DUMMY-DUMMY-DUMMY"]
 
-ENTRYPOINT sh -c " \
+# Run tests by default (master machine role)
+CMD ["bash", "-c", " \
 set -eux; \
-echo HELLO FROM ENTRYPOINT; \
-echo HOME DIR IS [`realpath ~/`]; \
-sudo /usr/sbin/sshd; \
-ssh-keyscan -H localhost >> ~/.ssh/known_hosts; \
-ssh-keyscan -H 127.0.0.1 >> ~/.ssh/known_hosts; \
-ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ''; \
-cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
-chmod 600 ~/.ssh/authorized_keys; \
-ls -la ~/.ssh/; \
-TEST_FILTER=\"\" bash ./run_tests3.sh;"
+echo \"HOME DIR IS [`realpath ~/`]\"; \
+echo \"WORK DIR IS [$(pwd)]\"; \
+if [ ! -f /home/test/.ssh/id_rsa ]; then \
+    su -c \"ssh-keygen -t rsa -f /home/test/.ssh/id_rsa -q -N ''\" test; \
+    su -c \"cat /home/test/.ssh/id_rsa.pub >> /home/test/.ssh/authorized_keys\" test; \
+    chmod 600 /home/test/.ssh/authorized_keys; \
+fi; \
+ls -la /home/test/.ssh/; \
+su -c \"ssh-keyscan -H localhost >> /home/test/.ssh/known_hosts\" test; \
+su -c \"ssh-keyscan -H 127.0.0.1 >> /home/test/.ssh/known_hosts\" test; \
+if [ -n \"${TEST_CFG__REMOTE_HOST:-}\" ]; then \
+    su -c \"ssh-keyscan -H ${TEST_CFG__REMOTE_HOST} >> /home/test/.ssh/known_hosts\" test; \
+fi; \
+if [ -n \"${TEST_CFG__REMOTE_SSH_KEY:-}\" ]; then \
+    cp \"${TEST_CFG__REMOTE_SSH_KEY}\" \"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    export TEST_CFG__REMOTE_SSH_KEY=\"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    chown test:test \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    chmod 600 \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    ls -la /home/test/.ssh/; \
+fi; \
+ls -la ./; \
+# AUTOMATIC TRANSFER: Save all TEST_CFG__xxx variables to a temporary file \
+(env | grep '^TEST_CFG__' | sed 's/^/export /' || echo '') > ./test_cfg_env.sh; \
+chown test:test ./test_cfg_env.sh; \
+cat ./test_cfg_env.sh; \
+# Run su -, pull in the file with variables and start the tests \
+su - test -c \"cd /home/test/testgres && source ./test_cfg_env.sh && bash ./run_tests3.sh\"; \
+"]
diff --git a/Dockerfile--astralinux_1_7.tmpl b/Dockerfile--astralinux_1_7.tmpl
index f696c44..0992a3e 100644
--- a/Dockerfile--astralinux_1_7.tmpl
+++ b/Dockerfile--astralinux_1_7.tmpl
@@ -49,22 +49,46 @@ WORKDIR /home/test/testgres
 
 ENV LANG=C.UTF-8
 
-USER test
-
-RUN chmod 700 ~/
-RUN mkdir -p ~/.ssh
-RUN chmod 700 ~/.ssh
-
-ENTRYPOINT sh -c " \
+RUN chmod 700 /home/test/ && \
+    mkdir -p /home/test/.ssh && \
+    chown -R test:test /home/test/.ssh
+
+#
+# \"$@\"
+#   - quote is important!
+#   - "DUMMY-DUMMY-DUMMY" will be ignored. Do not ask me "why?". AXEZ.
+#
+ENTRYPOINT ["sh", "-c", " \
+    set -eux; \
+    echo 'SYSTEM START: PREPARING SSH'; \
+    service ssh start; \
+    ls -la /home/test/.ssh/; \
+    \"$@\" \
+", "DUMMY-DUMMY-DUMMY"]
+
+# Run tests by default (master machine role)
+CMD ["bash", "-c", " \
 set -eux; \
-echo HELLO FROM ENTRYPOINT; \
-echo HOME DIR IS [`realpath ~/`]; \
-# sudo service ssh enable; \
-sudo service ssh start; \
-ssh-keyscan -H localhost >> ~/.ssh/known_hosts; \
-ssh-keyscan -H 127.0.0.1 >> ~/.ssh/known_hosts; \
-ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ''; \
-cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
-chmod 600 ~/.ssh/authorized_keys; \
-ls -la ~/.ssh/; \
-TEST_FILTER=\"\" bash run_tests3.sh;"
+echo \"HOME DIR IS [`realpath ~/`]\"; \
+echo \"WORK DIR IS [$(pwd)]\"; \
+if [ ! -f /home/test/.ssh/id_rsa ]; then \
+    su test -c \"ssh-keygen -t rsa -f /home/test/.ssh/id_rsa -q -N ''\"; \
+    su test -c \"cat /home/test/.ssh/id_rsa.pub >> /home/test/.ssh/authorized_keys\"; \
+    chmod 600 /home/test/.ssh/authorized_keys; \
+fi; \
+ls -la /home/test/.ssh/; \
+su test -c \"ssh-keyscan -H localhost >> /home/test/.ssh/known_hosts\"; \
+su test -c \"ssh-keyscan -H 127.0.0.1 >> /home/test/.ssh/known_hosts\"; \
+if [ -n \"${TEST_CFG__REMOTE_HOST:-}\" ]; then \
+    su test -c \"ssh-keyscan -H ${TEST_CFG__REMOTE_HOST} >> /home/test/.ssh/known_hosts\"; \
+fi; \
+if [ -n \"${TEST_CFG__REMOTE_SSH_KEY:-}\" ]; then \
+    cp \"${TEST_CFG__REMOTE_SSH_KEY}\" \"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    export TEST_CFG__REMOTE_SSH_KEY=\"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    chown test:test \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    chmod 600 \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    ls -la /home/test/.ssh/; \
+fi; \
+ls -la ./; \
+su test -c \"bash ./run_tests3.sh\"; \
+"]
diff --git a/Dockerfile--ubuntu_24_04.tmpl b/Dockerfile--ubuntu_24_04.tmpl
index 6cecb10..1f46d01 100644
--- a/Dockerfile--ubuntu_24_04.tmpl
+++ b/Dockerfile--ubuntu_24_04.tmpl
@@ -45,21 +45,46 @@ WORKDIR /home/test/testgres
 
 ENV LANG=C.UTF-8
 
-USER test
+RUN chmod 700 /home/test/ && \
+    mkdir -p /home/test/.ssh && \
+    chown -R test:test /home/test/.ssh
 
-RUN chmod 700 ~/
-RUN mkdir -p ~/.ssh
+#
+# \"$@\"
+#   - quote is important!
+#   - "DUMMY-DUMMY-DUMMY" will be ignored. Do not ask me "why?". AXEZ.
+#
+ENTRYPOINT ["sh", "-c", " \
+    set -eux; \
+    echo 'SYSTEM START: PREPARING SSH'; \
+    service ssh start; \
+    ls -la /home/test/.ssh/; \
+    \"$@\" \
+", "DUMMY-DUMMY-DUMMY"]
 
-ENTRYPOINT sh -c " \
-#set -eux; \
-echo HELLO FROM ENTRYPOINT; \
-echo HOME DIR IS [`realpath ~/`]; \
-service ssh enable; \
-sudo service ssh start; \
-ssh-keyscan -H localhost >> ~/.ssh/known_hosts; \
-ssh-keyscan -H 127.0.0.1 >> ~/.ssh/known_hosts; \
-ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -N ''; \
-cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; \
-chmod 600 ~/.ssh/authorized_keys; \
-ls -la ~/.ssh/; \
-TEST_FILTER=\"\" bash ./run_tests3.sh;"
+# Run tests by default (master machine role)
+CMD ["bash", "-c", " \
+set -eux; \
+echo \"HOME DIR IS [`realpath ~/`]\"; \
+echo \"WORK DIR IS [$(pwd)]\"; \
+if [ ! -f /home/test/.ssh/id_rsa ]; then \
+    su test -c \"ssh-keygen -t rsa -f /home/test/.ssh/id_rsa -q -N ''\"; \
+    su test -c \"cat /home/test/.ssh/id_rsa.pub >> /home/test/.ssh/authorized_keys\"; \
+    chmod 600 /home/test/.ssh/authorized_keys; \
+fi; \
+ls -la /home/test/.ssh/; \
+su test -c \"ssh-keyscan -H localhost >> /home/test/.ssh/known_hosts\"; \
+su test -c \"ssh-keyscan -H 127.0.0.1 >> /home/test/.ssh/known_hosts\"; \
+if [ -n \"${TEST_CFG__REMOTE_HOST:-}\" ]; then \
+    su test -c \"ssh-keyscan -H ${TEST_CFG__REMOTE_HOST} >> /home/test/.ssh/known_hosts\"; \
+fi; \
+if [ -n \"${TEST_CFG__REMOTE_SSH_KEY:-}\" ]; then \
+    cp \"${TEST_CFG__REMOTE_SSH_KEY}\" \"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    export TEST_CFG__REMOTE_SSH_KEY=\"${TEST_CFG__REMOTE_SSH_KEY}_ci\"; \
+    chown test:test \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    chmod 600 \"${TEST_CFG__REMOTE_SSH_KEY}\"; \
+    ls -la /home/test/.ssh/; \
+fi; \
+ls -la ./; \
+su test -c \"bash ./run_tests3.sh\"; \
+"]
diff --git a/tests/helpers/global_data.py b/tests/helpers/global_data.py
index f66772e..16032bd 100644
--- a/tests/helpers/global_data.py
+++ b/tests/helpers/global_data.py
@@ -4,6 +4,7 @@
 from src.remote_ops import RemoteOperations
 
 import os
+import typing
 
 
 class OsOpsDescr:
@@ -17,11 +18,18 @@ def __init__(self, sign: str, os_ops: OsOperations):
         self.os_ops = os_ops
 
 
+def _to_int_or_none(v: typing.Any) -> typing.Optional[int]:
+    return v if v is None else int(v)
+
+
 class OsOpsDescrs:
     sm_remote_conn_params = ConnectionParams(
-        host=os.getenv('RDBMS_TESTPOOL1_HOST') or '127.0.0.1',
-        username=os.getenv('USER'),
-        ssh_key=os.getenv('RDBMS_TESTPOOL_SSHKEY'))
+        host=os.getenv('TEST_CFG__REMOTE_HOST', '127.0.0.1'),
+        port=_to_int_or_none(os.getenv('TEST_CFG__REMOTE_PORT')),
+        username=os.getenv('TEST_CFG__REMOTE_USERNAME'),
+        ssh_key=os.getenv('TEST_CFG__REMOTE_SSH_KEY'),
+        password=os.getenv('TEST_CFG__REMOTE_PASSWORD'),
+    )
 
     sm_remote_os_ops = RemoteOperations(sm_remote_conn_params)
 
diff --git a/tests/test_os_ops_common.py b/tests/test_os_ops_common.py
index cd0191a..4439f63 100644
--- a/tests/test_os_ops_common.py
+++ b/tests/test_os_ops_common.py
@@ -2724,6 +2724,54 @@ def test_readlines__BIN(
         assert lines == result_bin
         return
 
+    def test_prove_environment_isolation(
+        self,
+        os_ops_descr: OsOpsDescr
+    ):
+        #
+        # Author: Marg G. (mark@google.com)
+        #
+
+        assert type(os_ops_descr) is OsOpsDescr
+        os_ops = os_ops_descr.os_ops
+        assert isinstance(os_ops, OsOperations)
+
+        logging.info("=================== COKANUM PROOF START ===================")
+        logging.info(f"Target environment type: [{os_ops_descr.sign}]")
+
+        # 1. Забираем OS-RELEASE
+        try:
+            # Используем cat, который мы уже проверили
+            os_release = os_ops.read("/etc/os-release")
+            assert type(os_release) is str
+            # Вытаскиваем только PRETTY_NAME для компактности в логах
+            pretty_name = "Unknown Linux"
+            for line in os_release.splitlines():
+                if line.startswith("PRETTY_NAME="):
+                    pretty_name = line.split("=")[1].strip('"')
+                    break
+            logging.info(f"OS Platform detected : {pretty_name}")
+        except Exception as e:
+            logging.error(f"Failed to read os-release: {e}")
+
+        # 2. Просто выводим сетевой ландшафт "как есть" и не паримся!
+        try:
+            cmd = ["ip", "address"]
+            ip_output = os_ops.exec_command(cmd, encoding="utf-8")
+            assert type(ip_output) is str
+            logging.info("Network interfaces info:")
+            # Печатаем всю простыню целиком, добавив отступы для красоты
+            for line in ip_output.splitlines():
+                logging.info(f"  {line}")
+        except Exception as e:
+            logging.error(f"Failed to get ip address output: {e}")
+
+        logging.info("=================== COKANUM PROOF END =====================")
+
+        # Тест всегда успешный, его цель — оставить исторический след в логах гитхаба
+        assert True
+        return
+
     @staticmethod
     def helper__bug_check__unknown_os_ops_type(
         os_ops: OsOperations,