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0f7a8dd951
Co-authored-by: Luke Childs <lukechilds123@gmail.com> Co-authored-by: Mayank Chhabra <mayankchhabra9@gmail.com>
48 lines
1.3 KiB
Bash
Executable File
48 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# This hack can be removed if https://github.com/docker-library/docker/pull/444 gets merged.
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# Remove docker pidfile if it exists to ensure Docker can start up after a bad shutdown
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pidfile="/var/run/docker.pid"
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if [[ -f "${pidfile}" ]]
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then
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rm -f "${pidfile}"
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fi
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# Use nftables as the backend for iptables
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for command in iptables iptables-restore iptables-restore-translate iptables-save iptables-translate
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do
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ln -sf /sbin/xtables-nft-multi /sbin/$command
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done
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# Ensure that a bridge exists with the given name
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ensure_bridge_exists() {
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local name="${1}"
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local ip_range="${2}"
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# Check if the bridge already exists
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if ip link show "${name}" &>/dev/null
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then
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echo "Bridge '${name}' already exists. Skipping creation."
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ip addr show "${name}"
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return
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fi
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echo "Bridge '${name}' does not exist. Creating..."
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ip link add "${name}" type bridge
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ip addr add "${ip_range}" dev "${name}"
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ip link set "${name}" up
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echo "Bridge '${name}' is now up with IP range '${ip_range}'."
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ip addr show "${name}"
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}
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if [[ "${DOCKER_ENSURE_BRIDGE}" != "" ]]
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then
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bridge="${DOCKER_ENSURE_BRIDGE%%:*}"
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ip_range="${DOCKER_ENSURE_BRIDGE#*:}"
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ensure_bridge_exists "${bridge}" "${ip_range}"
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fi
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exec dockerd-entrypoint.sh $@
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