chromedriver 2.18, Sauce Connect 4.3.11, SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS

Author: elgalu

CHANGELOG.md

@@ -13,6 +13,30 @@ How to get container versions
     google-chrome-unstable --version && echo "\n"
     sc | grep build && BrowserStackLocal -version
 
+## 2.47.1f (2015-08-19)
+ + Upgrade chromedriver from 2.17 to 2.18 (Leo Gallucci)
+ + Upgrade Sauce Connect version and add `sc --doctor`
+ + Retry Sauce Connect via -e SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS
+ + Image tag details:
+  + Selenium: v2.47.1 (411b314)
+  + Chrome stable:         44.0.2403.155
+  + Chrome beta:           45.0.2454.37
+  + Chrome dev (unstable): 46.0.2486.0
+  + Firefox versions in this image:
+              40.0.2  39.0.3  38.0.6  37.0.2  36.0.4
+      35.0.1  34.0.5  33.0.3  32.0.3  31.0    30.0
+      29.0.1  28.0    27.0.1  26.0    25.0.1  24.0
+  + chromedriver: 2.18.343837 (52eb4041461e46a6b73308ebb19e85787ced4281)
+  + Java: 1.8.0_66-internal OpenJDK 64-Bit 1.8.0_66-b01
+  + Timezone: Europe/Berlin
+  + Built with: Docker version 1.8.1, build d12ea79
+  + FROM ubuntu:wily-20150807
+  + Python: 2.7.10
+  + Sauce Connect 4.3.11, build 1757 2b421bb
+  + BrowserStack Local version 3.7
+  + Image ID: TBD
+  + Digest: sha256:TBD
+
 ## 2.47.1e (2015-08-14)
  + Upgrade from wily-20150731 to 20150807 (Leo Gallucci)
  + Add Firefox 40.0.2 and upgrade Chrome patch levels.

Dockerfile

@@ -497,7 +497,7 @@ RUN cd ${NORMAL_USER_HOME}/firefox-src \
 # Sauce Connect Tunneling #
 # ------------------------#
 # https://docs.saucelabs.com/reference/sauce-connect/
-ENV SAUCE_CONN_VER="sc-4.3.10-linux" \
+ENV SAUCE_CONN_VER="sc-4.3.11-linux" \
     SAUCE_CONN_DOWN_URL="https://saucelabs.com/downloads"
 RUN cd /tmp \
   && wget --no-verbose "${SAUCE_CONN_DOWN_URL}/${SAUCE_CONN_VER}.tar.gz" \
@@ -571,7 +571,7 @@ ENV CHROME_DRIVER_BASE chromedriver.storage.googleapis.com
 # Gets latest chrome driver version. Or you can hard-code it, e.g. 2.15
 RUN mkdir -p ${NORMAL_USER_HOME}/tmp && cd ${NORMAL_USER_HOME}/tmp \
   # 1st dup line CHROME_DRIVER_VERSION is just to invalidate docker cache
-  && CHROME_DRIVER_VERSION="2.17" \
+  && CHROME_DRIVER_VERSION="2.18" \
   # && CHROME_DRIVER_VERSION=$(curl 'http://chromedriver.storage.googleapis.com/LATEST_RELEASE' 2> /dev/null) \
   && CHROME_DRIVER_URL="${CHROME_DRIVER_BASE}/${CHROME_DRIVER_VERSION}/${CHROME_DRIVER_FILE}" \
   && wget --no-verbose -O chromedriver_linux${CPU_ARCH}.zip ${CHROME_DRIVER_URL} \
@@ -814,12 +814,17 @@ ENV FIREFOX_VERSIONS="${FIREFOX_VERSIONS1}, ${FIREFOX_VERSIONS2}, ${FIREFOX_VERS
   SAUCE_TUNNEL_READY_FILE="/tmp/sauce-connect-ready" \
   SAUCE_LOCAL_SEL_PORT="4445" \
   SAUCE_WAIT_TIMEOUT="100s" \
+  SAUCE_WAIT_RETRY_TIMEOUT="210s" \
+  SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS="1" \
   # BrowserStack tunneling. Naming is required: BSTACK_TUNNEL_ID
   BSTACK_TUNNEL="false" \
   BSTACK_ACCESS_KEY="" \
   BSTACK_TUNNEL_ID="docker-selenium" \
   BSTACK_TUNNEL_OPTS="-skipCheck -v -forcelocal" \
   BSTACK_WAIT_TIMEOUT="70s" \
+  BSTACK_WAIT_RETRY_TIMEOUT="150s" \
+  # Amount of lines to display when startup errors
+  TAIL_LOG_LINES="15" \
   # Java stuff
   # MEM_JAVA="1024m" \
   #===============================

README.md

@@ -20,7 +20,7 @@ Note SeleniumHQ/docker-selenium project is more useful for building selenium gri
 In general: add `sudo` only if needed in your environment and `--privileged` if you really need it.
 
     sudo docker run --privileged -p 4444:24444 -p 5920:25900 \
-        -e VNC_PASSWORD=hola elgalu/selenium:2.47.1e
+        -e VNC_PASSWORD=hola elgalu/selenium:2.47.1f
 
 ### Non-privileged
 ### Run
@@ -32,7 +32,7 @@ If your setup is correct, privileged mode and sudo should not be necessary:
         -e SCREEN_WIDTH=1920 -e SCREEN_HEIGHT=1080 \
         -e VNC_PASSWORD=hola \
         -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" \
-        elgalu/selenium:2.47.1e
+        elgalu/selenium:2.47.1f
 
 Make sure `docker run` finishes with **selenium all done and ready for testing** else you won't be able to start your tests. To perform this check programatically please use this command where `ch` is the name of the container:
 
@@ -97,7 +97,7 @@ You can lunch a grid only container via environment variables:
 
     docker run --rm --name=hub -p 4444:24444 -p 5930:25900 -p 2223:22222 \
       -p=6081:26080 -e CHROME=false -e FIREFOX=false \
-      elgalu/selenium:2.47.1e
+      elgalu/selenium:2.47.1f
 
 The important part above is `-e CHROME=false -e FIREFOX=false` which tells the docker image not run run default chorme and firefox nodes turning the container into a grid-only one.
 
@@ -113,7 +113,7 @@ You can lunch a node only container via environment variables:
       -p 25550:25550 -p 25551:25551 \
       -e GRID=false -e CHROME=true -e FIREFOX=true \
       -v $(pwd)/videos:/videos \
-      elgalu/selenium:2.47.1e
+      elgalu/selenium:2.47.1f
 
 The important part above is `-e GRID=false` which tells the container to be a node-only node, this this case with 2 browsers `-e CHROME=true -e FIREFOX=true` but could be just 1.
 
@@ -138,9 +138,9 @@ There are also additional steps you can take to ensure you're using the correct
 
 You can simply verify that image id is indeed the correct one.
 
-    # e.g. full image id for tag 2.47.1e
-    export IMGID=b7f6f616de9feb402c81e1940ca8a90fc8f4e74cd0163cb530ef46b1cb99b990
-    if docker inspect -f='{{.Id}}' elgalu/selenium:2.47.1e |grep ${IMGID} &> /dev/null; then
+    # e.g. full image id for tag 2.47.1f
+    export IMGID=TBD
+    if docker inspect -f='{{.Id}}' elgalu/selenium:2.47.1f |grep ${IMGID} &> /dev/null; then
         echo "Image ID tested ok"
     else
         echo "Image ID doesn't match"
@@ -150,8 +150,8 @@ You can simply verify that image id is indeed the correct one.
 
 Given docker.io currently allows to push the same tag image twice this represent a security concern but since docker >= 1.6.2 is possible to fetch the digest sha256 instead of the tag so you can be sure you're using the exact same docker image every time:
 
-    # e.g. sha256 for tag 2.47.1e
-    export SHA=60bdb382f19cca7caf1d541839fc98a0dec7b58ede684d1d4c3b5a82b84b2e41
+    # e.g. sha256 for tag 2.47.1f
+    export SHA=TBD
     docker pull elgalu/selenium@sha256:${SHA}
 
 You can find all digests sha256 and image ids per tag in the [CHANGELOG](./CHANGELOG.md) so as of now you just need to trust the sha256 in the CHANGELOG. Bullet proof is to fork this project and build the images yourself if security is a big concern.
@@ -176,7 +176,7 @@ Host machine, terminal 2:
     docker run --rm --name=ch -p=4470:24444 \
       -e SCREEN_WIDTH -e SCREEN_HEIGHT -e XE_DISP_NUM \
       -v /tmp/.X11-unix/X${XE_DISP_NUM}:/tmp/.X11-unix/X${XE_DISP_NUM} \
-      elgalu/selenium:2.47.1e
+      elgalu/selenium:2.47.1f
 
 Now when you run your tests instead of connecting. If docker run fails try `xhost +`
 
@@ -198,7 +198,7 @@ ANYPORT=0
 REMOTE_DOCKER_SRV=localhost
 CONTAINER=$(docker run -d -p=0.0.0.0:${ANYPORT}:22222 -p=0.0.0.0:${ANYPORT}:24444 \
     -p=0.0.0.0:${ANYPORT}:25900 -e SCREEN_HEIGHT=1110 -e VNC_PASSWORD=hola \
-    -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" elgalu/selenium:2.47.1e
+    -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" elgalu/selenium:2.47.1f
 
 # -- Option 2.docker run- Running docker on remote docker server like in the cloud
 # Useful if the docker server is running in the cloud. Establish free local ports
@@ -208,7 +208,7 @@ ssh ${REMOTE_DOCKER_SRV} #get into the remote docker provider somehow
 # it acts as a jump host so my public key is already on that server
 CONTAINER=$(docker run -d -p=0.0.0.0:${ANYPORT}:22222 -e SCREEN_HEIGHT=1110 \
     -e VNC_PASSWORD=hola -e SSH_AUTH_KEYS="$(cat ~/.ssh/authorized_keys)" \
-    elgalu/selenium:2.47.1e
+    elgalu/selenium:2.47.1f
 
 # -- Common: Wait for the container to start
 ./host-scripts/wait-docker-selenium.sh ch 7s
@@ -279,7 +279,7 @@ If you git clone this repo locally, i.e. cd into where the Dockerfile is, you ca
 
 If you prefer to download the final built image from docker you can pull it, personally I always prefer to build them manually except for the base images like Ubuntu 14.04.2:
 
-    docker pull elgalu/selenium:2.47.1e
+    docker pull elgalu/selenium:2.47.1f
 
 #### 2. Use this image
 

READMELeo.md

@@ -1,15 +1,15 @@
 ## Build
 
-    time (docker build -t="elgalu/selenium:2.47.1e" . ;echo $?;beep)
-    docker run --rm -ti -m 2000M --cpu-quota=90000 --name=ch -p=4470:24444 -p=5920:25900 -p=2222:22222 -p=6080:26080 -p=29001:29001 -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" -v $(pwd)/videos:/videos -e DISABLE_ROLLBACK=true -e VIDEO=true -e VIDEO_FILE_NAME=hola -e MEM_JAVA="1024m" -e WAIT_TIMEOUT="20s" elgalu/selenium:2.47.1e
+    time (docker build -t="elgalu/selenium:2.47.1f" . ;echo $?;beep)
+    docker run --rm -ti -m 2000M --cpu-quota=90000 --name=ch -p=4470:24444 -p=5920:25900 -p=2222:22222 -p=6080:26080 -p=29001:29001 -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" -v $(pwd)/videos:/videos -e DISABLE_ROLLBACK=true -e VIDEO=true -e VIDEO_FILE_NAME=hola -e MEM_JAVA="1024m" -e WAIT_TIMEOUT="20s" elgalu/selenium:2.47.1f
 
 See logs
 
     docker exec -ti ch bash -c "ls -lah /var/log/sele/"
 
 Testing in ssh [email protected]
 
-    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -p=2222:22222 -e SSH_AUTH_KEYS="$(cat ~/.ssh/authorized_keys)" -e VNC_PASSWORD=Hola3 os-registry.stups.zalan.do/tip/selenium:2.47.1e
+    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -p=2222:22222 -e SSH_AUTH_KEYS="$(cat ~/.ssh/authorized_keys)" -e VNC_PASSWORD=Hola3 os-registry.stups.zalan.do/tip/selenium:2.47.1f
 
 ## Transfer used browser source artifacts to keep them in the cloud
 
@@ -32,18 +32,18 @@ List firefox versions via docker exe
 
 ## To update image id and digest
 
-    docker inspect -f='{{.Id}}' elgalu/selenium:2.47.1e
+    docker inspect -f='{{.Id}}' elgalu/selenium:2.47.1f
     docker images --digests
 
 ## Run with shared dir
 
     docker run --rm --name=ch -p=127.0.0.1:4460:24444 -p=127.0.0.1:5910:25900 \
-      -v /e2e/uploads:/e2e/uploads elgalu/selenium:2.47.1e
+      -v /e2e/uploads:/e2e/uploads elgalu/selenium:2.47.1f
     docker run --rm --name=ch -p=4460:24444 -p=5910:25900 \
-      -v /var/run/docker.sock:/var/run/docker.sock -v $(which docker):$(which docker) elgalu/selenium:2.47.1e
+      -v /var/run/docker.sock:/var/run/docker.sock -v $(which docker):$(which docker) elgalu/selenium:2.47.1f
 
 
-    docker run --rm --name=ff -p=127.0.0.1:4461:24444 -p=127.0.0.1:5911:25900 -v /e2e/uploads:/e2e/uploads elgalu/selenium:2.47.1e
+    docker run --rm --name=ff -p=127.0.0.1:4461:24444 -p=127.0.0.1:5911:25900 -v /e2e/uploads:/e2e/uploads elgalu/selenium:2.47.1f
 
 ## Run without shared dir and bind ports to all network interfaces
 
@@ -66,11 +66,11 @@ List firefox versions via docker exe
 ## Run without dir and bind to all interfaces
 Note anything after the image will be taken as arguments for the cmd/entrypoint
 
-    docker run --rm --name=ch -p=0.0.0.0:8813:8484 -p=0.0.0.0:2222:2222 -p=0.0.0.0:4470:24444 -p=0.0.0.0:5920:25900 -e SCREEN_WIDTH=1800 -e SCREEN_HEIGHT=1110 -e VNC_PASSWORD=hola -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" elgalu/selenium:2.47.1e
+    docker run --rm --name=ch -p=0.0.0.0:8813:8484 -p=0.0.0.0:2222:2222 -p=0.0.0.0:4470:24444 -p=0.0.0.0:5920:25900 -e SCREEN_WIDTH=1800 -e SCREEN_HEIGHT=1110 -e VNC_PASSWORD=hola -e SSH_AUTH_KEYS="$(cat ~/.ssh/id_rsa.pub)" elgalu/selenium:2.47.1f
 
-    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -e VNC_PASSWORD=hola elgalu/selenium:2.47.1e
-    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -e VNC_PASSWORD=hola docker.io/elgalu/selenium:2.47.1e
-    docker run --rm --name=ch -p=0.0.0.0:4470:24444 -p=0.0.0.0:5920:25900 --add-host myserver.dev:172.17.42.1 elgalu/selenium:2.47.1e
+    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -e VNC_PASSWORD=hola elgalu/selenium:2.47.1f
+    docker run --rm --name=ch -p=4470:24444 -p=5920:25900 -e VNC_PASSWORD=hola docker.io/elgalu/selenium:2.47.1f
+    docker run --rm --name=ch -p=0.0.0.0:4470:24444 -p=0.0.0.0:5920:25900 --add-host myserver.dev:172.17.42.1 elgalu/selenium:2.47.1f
 
 However adding a custom host IP to server-selenium.local (e.g. bsele ssh config) is more work:
 
@@ -79,32 +79,32 @@ However adding a custom host IP to server-selenium.local (e.g. bsele ssh config)
 
     vncv localhost:5920 -Scaling=60%  &
 
-    docker run --rm --name=ff -p=0.0.0.0:4471:24444 -p=0.0.0.0:5921:25900 elgalu/selenium:2.47.1e
+    docker run --rm --name=ff -p=0.0.0.0:4471:24444 -p=0.0.0.0:5921:25900 elgalu/selenium:2.47.1f
 
 Automatic builds not working for me right now, maybe there is an issue with docker registry v1 vs v2
 https://registry.hub.docker.com/u/elgalu/docker-selenium/builds_history/31621/
 
 ## Push version
 
     docker login
-    docker push docker.io/elgalu/selenium:2.47.1e ;echo $?;beep
-    docker tag elgalu/selenium:2.47.1e elgalu/selenium:latest
+    docker push docker.io/elgalu/selenium:2.47.1f ;echo $?;beep
+    docker tag elgalu/selenium:2.47.1f elgalu/selenium:latest
     docker push docker.io/elgalu/selenium:latest
 
 Not working maybe because it has automated builds enabled but then it fails in the cloud but works locally
 https://registry.hub.docker.com/u/elgalu/selenium/tags/manage/
 
-    docker push elgalu/selenium:2.47.1e
-    docker push elgalu/docker-selenium:2.47.1e
-    docker push docker.io/elgalu/docker-selenium:2.47.1e
+    docker push elgalu/selenium:2.47.1f
+    docker push elgalu/docker-selenium:2.47.1f
+    docker push docker.io/elgalu/docker-selenium:2.47.1f
 
 ## Pulling
 
-    docker pull registry.hub.docker.com/elgalu/selenium:2.47.1e
+    docker pull registry.hub.docker.com/elgalu/selenium:2.47.1f
 
 ## Pull
 
-    docker run -d --name=max -p=0.0.0.0:4411:24444 -p=0.0.0.0:5911:25900 elgalu/selenium:2.47.1e
+    docker run -d --name=max -p=0.0.0.0:4411:24444 -p=0.0.0.0:5911:25900 elgalu/selenium:2.47.1f
 
 How to connect through vnc (need a vnc client)
 

host-scripts/wait-docker-selenium.sh

@@ -23,6 +23,9 @@ CONTAINER_ID=${1}
 # if $2 is defined AND NOT EMPTY, use $2; otherwise, set to "7s"
 WAIT_TIMEOUT=${2-7s}
 
+# default $TAIL_LOG_LINES when not provided
+TAIL_LOG_LINES=${TAIL_LOG_LINES-10}
+
 # Full directory name of the script no matter where it is being called from
 DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 LOOP_SCRIPT_PATH="${DIR}/loop-wait-docker.sh"
@@ -40,9 +43,11 @@ if timeout --foreground ${WAIT_TIMEOUT} \
   docker exec ${CONTAINER_ID} \
     grep 'IP:' /var/log/sele/xterm-stdout.log || die "Failed to grep IP:"
 else
-  docker exec ${CONTAINER_ID} bash -c 'tail /var/log/sele/*' || true
+  docker exec ${CONTAINER_ID} \
+    bash -c 'tail --lines=${TAIL_LOG_LINES} /var/log/sele/*' || true
   echo "" && echo "" && echo "==> errors <=="
-  docker exec ${CONTAINER_ID} bash -c '/bin-utils/selenium-grep.sh' || true
+  docker exec ${CONTAINER_ID} \
+    bash -c '/bin-utils/selenium-grep.sh' || true
 
   die "
    Your docker-selenium didn't start properly.

saucelabs/bin/start-saucelabs.sh

@@ -17,6 +17,7 @@ die () {
 }
 
 # Required params
+[ -z "${SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS}" ] && die "Required SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS"
 [ -z "${SAUCE_LOCAL_SEL_PORT}" ] && die "Required SAUCE_LOCAL_SEL_PORT"
 [ -z "${SAUCE_USER_NAME}" ] && die "Required env var SAUCE_USER_NAME"
 [ -z "${SAUCE_API_KEY}" ] && die "Required env var SAUCE_API_KEY"
@@ -27,13 +28,37 @@ die () {
 # - none, the tunnel has no dependencies
 # timeout --foreground ${WAIT_TIMEOUT} wait-xvfb.sh
 
-# Start tunnel
-sc --se-port ${SAUCE_LOCAL_SEL_PORT} \
+# Do a smoke doctor run to make sure everything is ok and too keep
+# for the logs
+sc --doctor \
    --user "${SAUCE_USER_NAME}" \
-   --api-key "${SAUCE_API_KEY}" \
-   --readyfile "${SAUCE_TUNNEL_READY_FILE}" \
-   --tunnel-identifier "${SAUCE_TUNNEL_ID}" &
-SAUCE_TUNNEL_PID=$!
+   --api-key "${SAUCE_API_KEY}"
+
+# Start tunnel
+i=0
+set +e
+# for i in 1 2 3 4 5; do
+until [ $i -ge $SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS ]; do
+  if [ $i -ge 1 ]; then
+    echo "Failed attempt $i to start Sauce tunnel, will retry..."
+    sleep 1
+  fi
+  sc --se-port ${SAUCE_LOCAL_SEL_PORT} \
+     --user "${SAUCE_USER_NAME}" \
+     --api-key "${SAUCE_API_KEY}" \
+     --readyfile "${SAUCE_TUNNEL_READY_FILE}" \
+     --tunnel-identifier "${SAUCE_TUNNEL_ID}" &
+  SAUCE_TUNNEL_PID=$!
+  (timeout --foreground ${SAUCE_WAIT_TIMEOUT} wait-saucelabs.sh) && break
+  i=$[$i+1]
+done
+set -e #restore
+if [ $i -ge $SAUCE_TUNNEL_MAX_RETRY_ATTEMPTS ]; then
+  echo "Failed attempt $i to start Sauce tunnel for the last time!"
+  kill -SIGINT ${SAUCE_TUNNEL_PID}
+  wait ${SAUCE_TUNNEL_PID}
+  exit 1
+fi
 
 function shutdown {
   echo "Trapped SIGTERM/SIGINT so shutting down Sauce Labs gracefully..."

saucelabs/bin/wait-saucelabs.sh

@@ -17,12 +17,16 @@ die () {
 }
 
 export DONE_MSG="Sauce Connect is up, you may start your tests."
+export GOODBYE_MSG="Goodbye."
 
 if [ "${SAUCE_TUNNEL}" = "true" ]; then
   echo "Waiting for Sauce Labs tunnel to start..."
   # Required params
   [ -z "${SAUCE_LOG_FILE}" ] && die "Required env var SAUCE_LOG_FILE"
   while ! grep "${DONE_MSG}" ${SAUCE_LOG_FILE} >/dev/null; do
+    if grep "${GOODBYE_MSG}" ${SAUCE_LOG_FILE} >/dev/null; then
+      die "Found GOODBYE_MSG '${GOODBYE_MSG}' in output so quitting."
+    fi
     echo -n '.'
     sleep 0.2;
   done

scm-source.json

@@ -1,6 +1,6 @@
 {
     "url": "https://github.com/elgalu/docker-selenium",
-    "revision": "604042665c3fe969999b52437743dce7dcf386d0",
+    "revision": "fee7549c2f93dca7b7950f1e43554be1324b591f",
     "author": "lgallucci",
     "status": ""
 }

supervisor/bin/run-supervisord.sh

@@ -1,5 +1,21 @@
 #!/usr/bin/env bash
 
+# echo fn that outputs to stderr http://stackoverflow.com/a/2990533/511069
+echoerr() {
+  cat <<< "$@" 1>&2;
+}
+
+# print error and exit
+die () {
+  echoerr "ERROR: $1"
+  # if $2 is defined AND NOT EMPTY, use $2; otherwise, set to "3"
+  errnum=${2-3}
+  exit $errnum
+}
+
+# Required params
+[ -z "${TAIL_LOG_LINES}" ] && die "Required TAIL_LOG_LINES"
+
 # Exit all child processes properly
 function shutdown {
   echo "Trapped SIGTERM/SIGINT/x so shutting down supervisord gracefully..."
@@ -16,7 +32,7 @@ function shutdown {
   #  - output logs
   #  - exec bash to permit troubleshooting
   if [ "$(cat ${DOCKER_SELENIUM_STATUS})" = "failed" ]; then
-    tail /var/log/sele/*
+    tail --lines=${TAIL_LOG_LINES} /var/log/sele/*
     echo "" && echo "" && echo "==> errors <=="
     selenium-grep.sh