Docker container providing nginx/letsencrypt support
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#!/bin/sh
if [ -z "$DOMAIN" -o -z "$EMAIL" ]; then
echo Missing DOMAIN or EMAIL parameter - aborting. >&2
exit 1
fi
# Check that the domain exists, if not wait for it
ipv6_addr=""
ipv4_addr=""
while [ -z "$ipv6_addr" -a -z "$ipv4_addr" ]; do
echo "Trying to resolve $DOMAIN via DNS ..."
# Resolve for IPv6 and for IPv6
ipv6_addr=$(dig +short "$DOMAIN" aaaa)
ipv4_addr=$(dig +short "$DOMAIN" a)
if [ "$ipv6_addr" -o "$ipv4_addr" ]; then
echo "Resolved domain $DOMAIN: ipv6: $ipv6_addr ipv4: $ipv4_addr"
else
echo "Resolving $DOMAIN failed, waiting 2 seconds before retrying ..."
sleep 2
fi
done
if [ "$STAGING" = no ]; then
STAGING=""
else
STAGING="--staging"
fi
# Skip getting certs if requested
if [ -z "$ONLYRENEWCERTS" -a -z "$ONLYRENEWCERTSONCE" ]; then
# Try to get a certificate, accept failures
while [ ! -f "/etc/letsencrypt/live/${DOMAIN}/fullchain.pem" ]; do
certbot certonly --agree-tos --cert-name "${DOMAIN}" \
--email "$EMAIL" --expand --non-interactive \
--domain "$DOMAIN" --standalone $STAGING
# If it failed, sleep before next try
if [ ! -f "/etc/letsencrypt/live/${DOMAIN}/fullchain.pem" ]; then
sleep 30
fi
# Correct permissions for multi user container/pod deployments
# if not indicated otherwise
if [ -z "$LEAVE_PERMISSIONS_AS_IS" ]; then
find /etc/letsencrypt -type d -exec chmod 0755 {} \;
find /etc/letsencrypt -type f -exec chmod 0644 {} \;
fi
done
fi
if [ "$ONLYGETCERT" ]; then
exit 0
fi
# Before starting nginx, try to renew to ensure we are up-to-date
# This is necessary for container restarts not to delay a needed renew
/usr/bin/certbot renew --standalone
# If it requested to renew once only we are done here
[ "$ONLYRENEWCERTSONCE" ] && exit 0
if [ "$NO_NGINX" ]; then
sleep infinity
else
# First builtin
cp /nginx/* /etc/nginx/conf.d
# Then user provided
if [ -d /nginx-configs ]; then
cp /nginx-configs/* /etc/nginx/conf.d
fi
nginx -g "daemon off;"
fi