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Docker override config from env variables #8326

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Docker override config from env variables #8326

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22 changes: 22 additions & 0 deletions bin/container_daemon
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
set -e
user=ipfs
repo="$IPFS_PATH"
ipfsEnvPrefix="IPFSCONFIG"

if [ `id -u` -eq 0 ]; then
echo "Changing user to $user"
Expand All @@ -25,6 +26,27 @@ else
ipfs config Addresses.API /ip4/0.0.0.0/tcp/5001
ipfs config Addresses.Gateway /ip4/0.0.0.0/tcp/8080

# Set config from ENV variables
# Some examples are:
#
# IPFSCONFIG_Swarm_EnableAutoRelay=true
# IPFSCONFIG_Addresses_Swarm=[\"/ip4/0.0.0.0/tcp/4001\",\"/ip6/::/tcp/4001\"]
env | \
while IFS='=' read -r name value; do
# Since we don't have extended pattern in busybox, will use grep
if echo $name | grep -qxwE "${ipfsEnvPrefix}(_[a-zA-Z0-9]+)+" ; then
removePrefix=${name#$ipfsEnvPrefix*}
replaceToDot=${removePrefix//_/.}
ipfsConfigArg=${replaceToDot:1}

# Inform user what we are doing, since it could be
# a potential vector for command injections
set -x
ipfs config --json $ipfsConfigArg $value
{ set +x; } 2>/dev/null
fi
done

# Set up the swarm key, if provided

SWARM_KEY_FILE="$repo/swarm.key"
Expand Down