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50 lines
1.2 KiB
Bash
Executable File
50 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# copied from projects/compose, with fixes for shellcheck
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# shellcheck disable=SC2039
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set -e
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#########
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#
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# wait for docker socket to be ready, then run the rest of the command
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#
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########
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RETRIES=${RETRIES:-"-1"}
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WAIT=${WAIT:=10}
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[ -n "$DEBUG" ] && set -x
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# keep retrying until docker is ready or we hit our limit
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retry_or_fail() {
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local retry_count=0
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local success=1
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local cmd=$1
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local retryMax=$2
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local retrySleep=$3
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local message=$4
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until [ "$retry_count" -ge "$retryMax" ] && [ "$retryMax" -ne -1 ]; do
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echo "trying to $message"
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set +e
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$cmd
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success=$?
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set -e
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[ $success -eq 0 ] && break
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retry_count=$(( retry_count+1 )) || true
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echo "attempt number $retry_count failed to $message, sleeping $retrySleep seconds..."
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sleep "$retrySleep"
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done
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# did we succeed?
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if [ $success -ne 0 ]; then
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echo "failed to $message after $retryMax tries. Exiting..." >&2
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exit 1
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fi
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}
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connect_to_docker() {
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[ -S /var/run/docker.sock ] || return 1
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curl --unix-socket /var/run/docker.sock http://localhost/containers/json >/dev/null 2>&1 || return 1
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}
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# try to connect to docker
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retry_or_fail connect_to_docker "$RETRIES" "$WAIT" "connect to docker"
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# if we got here, we succeeded
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exec "$@"
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