Docker syntax to include TLS/SSL proxy certificates into ca-certificates and java keystore

gistfile1.txt

# Compile and install certificates for the Java trust keystore
COPY certs/ /usr/local/share/ca-certificates/
RUN update-ca-certificates && \
    ls -1 /usr/local/share/ca-certificates | while read cert; do \
        openssl x509 -outform der -in /usr/local/share/ca-certificates/$cert -out $cert.der; \
        "$JAVA_HOME/bin/keytool" -import -alias $cert -keystore "$JAVA_HOME/jre/lib/security/cacerts" -trustcacerts -file $cert.der -storepass changeit -noprompt; \
        rm $cert.der; \
    done