Run script when specific docker starts

[pkoasne]

Hi, Is there a way that I can trigger a script to run whenever a specific docker starts? The options in the User Scripts plugin doesn't have this usecase. Thanks

[JonathanM]

Not that I can think of, but you can certainly start a container from a script. Disable the auto start for that container on the docker page and script the startup separately.

schedule at array start

sleep however long you want to wait

docker start containername

run the rest of your commands.

[pkoasne]

19 hours ago, JonathanM said:

Not that I can think of, but you can certainly start a container from a script. Disable the auto start for that container on the docker page and script the startup separately.

schedule at array start

sleep however long you want to wait

docker start containername

run the rest of your commands.

Thanks, that is basically what I ended up doing. Running this on a cron every few minutes to check if the docker is running and if not it starts it up and executes the commands I need. Sharing the script in case anyone else ever needs this.

 

#!/bin/bash

# Replace CONTAINER_NAME with the actual name of your running Docker container
CONTAINER_NAME="CHANGEME"

# Specify the log file path
LOG_FILE="docker_exec_log.txt"

# Check if the container is already running
if docker inspect -f '{{.State.Running}}' $CONTAINER_NAME > /dev/null 2>&1; then
    echo "Container $CONTAINER_NAME is already running."
    exit 0
fi

# Start the container if it's not running
docker start $CONTAINER_NAME

# Wait for the container to start
echo "Waiting for container $CONTAINER_NAME to start..."
while ! docker inspect -f '{{.State.Running}}' $CONTAINER_NAME > /dev/null 2>&1; do
    sleep 1
done

echo "Container $CONTAINER_NAME is now running."

# Run commands inside the Docker container and log errors/output
docker exec $CONTAINER_NAME bash -c '
 REPLACE_THIS_WITH_THE_COMMANDS_YOU_WANT_TO_RUN
' 2>&1 > $LOG_FILE

# Display the log file contents
cat $LOG_FILE

 

Edited August 12, 2023 by pkoasne
added script

[BlueBull]

On 8/12/2023 at 8:19 PM, pkoasne said:

Thanks, that is basically what I ended up doing. Running this on a cron every few minutes to check if the docker is running and if not it starts it up and executes the commands I need. Sharing the script in case anyone else ever needs this.

 

#!/bin/bash

# Replace CONTAINER_NAME with the actual name of your running Docker container
CONTAINER_NAME="CHANGEME"

# Specify the log file path
LOG_FILE="docker_exec_log.txt"

# Check if the container is already running
if docker inspect -f '{{.State.Running}}' $CONTAINER_NAME > /dev/null 2>&1; then
    echo "Container $CONTAINER_NAME is already running."
    exit 0
fi

# Start the container if it's not running
docker start $CONTAINER_NAME

# Wait for the container to start
echo "Waiting for container $CONTAINER_NAME to start..."
while ! docker inspect -f '{{.State.Running}}' $CONTAINER_NAME > /dev/null 2>&1; do
    sleep 1
done

echo "Container $CONTAINER_NAME is now running."

# Run commands inside the Docker container and log errors/output
docker exec $CONTAINER_NAME bash -c '
 REPLACE_THIS_WITH_THE_COMMANDS_YOU_WANT_TO_RUN
' 2>&1 > $LOG_FILE

# Display the log file contents
cat $LOG_FILE

 

You are awesome for sharing the script! I greatly appreciate it, thank you