build: falco tester automatic version

Signed-off-by: Lorenzo Fontana <lo@linux.com>

.circleci/config.yml

@@ -59,17 +59,20 @@ jobs:
   # execute integration tests based on the build results coming from the "build/centos7" job
   "tests/integration":
     docker:
-      - image: falcosecurity/falco-tester:latest
+      - image: falcosecurity/falco-tester:dynamic-builds # todo(fntlnz): replace this with the actual image once PR #968 is merged
+        environment:
+          SOURCE_DIR: "/source"
+          BUILD_DIR: "/build"
+          BUILD_TYPE: "release"
     steps:
+      - setup_remote_docker
       - checkout:
           path: /source/falco
       - attach_workspace:
           at: /
       - run:
           name: execute integration tests
-          command: |
+          command: /usr/bin/entrypoint test
-            ls -la /
-            ls -la /build
 workflows:
   version: 2
   build_and_test:

docker/tester/root/usr/bin/entrypoint

@@ -24,7 +24,11 @@ case "$CMD" in
         exit 1
     fi
     if [ -z "$FALCO_VERSION" ]; then
-        echo "Missing Falco version." >&2
+        echo "Automatically figuring out Falco version."
+        FALCO_VERSION=$($BUILD_DIR/$BUILD_TYPE/userspace/falco/falco --version | cut -d' ' -f3 | tr -d '\r')
+    fi
+    if [ -z "$FALCO_VERSION" ]; then
+        echo "Falco version cannot be guessed, please provide it with the FALCO_VERSION environment variable." >&2
         exit 1
     fi
     PACKAGE="$BUILD_DIR/$BUILD_TYPE/falco-$FALCO_VERSION-x86_64.deb"