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A minimal adapted version of https://gist.github.com/Firefishy/109b0f1a90156f6c933a50fe40aa777e added x3 authority. Will add the letsencrypt certificates to the java jdk keystore cacerts
set -e
KEYSTORE=$JAVA_HOME/jre/lib/security/cacerts
wget https://letsencrypt.org/certs/letsencryptauthorityx1.der
wget https://letsencrypt.org/certs/letsencryptauthorityx2.der
wget https://letsencrypt.org/certs/letsencryptauthorityx3.der
wget https://letsencrypt.org/certs/lets-encrypt-x1-cross-signed.der
wget https://letsencrypt.org/certs/lets-encrypt-x2-cross-signed.der
wget https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.der
wget https://letsencrypt.org/certs/lets-encrypt-x4-cross-signed.der
# to be idempotent
keytool -delete -alias isrgrootx1 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias isrgrootx2 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias isrgrootx3 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias letsencryptauthorityx1 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias letsencryptauthorityx2 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias letsencryptauthorityx3 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -delete -alias letsencryptauthorityx4 -keystore $KEYSTORE -storepass changeit 2> /dev/null || true
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias isrgrootx1 -file letsencryptauthorityx1.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias isrgrootx2 -file letsencryptauthorityx2.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias isrgrootx3 -file letsencryptauthorityx3.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias letsencryptauthorityx1 -file lets-encrypt-x1-cross-signed.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias letsencryptauthorityx2 -file lets-encrypt-x2-cross-signed.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias letsencryptauthorityx3 -file lets-encrypt-x3-cross-signed.der
keytool -trustcacerts -keystore $KEYSTORE -storepass changeit -noprompt -importcert -alias letsencryptauthorityx4 -file lets-encrypt-x4-cross-signed.der
rm -f letsencryptauthorityx1.der letsencryptauthorityx2.der letsencryptauthorityx3.der lets-encrypt-x1-cross-signed.der lets-encrypt-x2-cross-signed.der lets-encrypt-x3-cross-signed.der lets-encrypt-x4-cross-signed.der
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