Add git ssh to release script

Author: kmozsi

Dockerfile

@@ -3,8 +3,6 @@ FROM openjdk:8-jdk-alpine
 ENV VERSION=
 ENV NEXT_VERSION=
 ENV GPG_PASSPHRASE=
-ENV GIT_USERNAME=
-ENV GIT_SECRET=
 ARG GIT_EMAIL=
 ARG FULL_NAME=
 
@@ -17,11 +15,12 @@ ENV MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
 
 VOLUME /gpg
 VOLUME /maven
+VOLUME /ssh
 
 COPY maven-release.sh /maven-release.sh
 
 # Install Maven, Git and gpg
-RUN apk add --no-cache curl tar bash git gnupg
+RUN apk add --no-cache curl tar bash git gnupg openssh
 RUN mkdir -p /usr/share/maven && \
 	curl -fsSL http://apache.osuosl.org/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz | tar -xzC /usr/share/maven --strip-components=1 && \
 ln -s /usr/share/maven/bin/mvn /usr/bin/mvn

maven-release.sh

@@ -7,9 +7,11 @@ echo "Set private key..."
 cp -vr /gpg ~/.gnupg
 echo "pinentry-mode loopback" > ~/.gnupg/gpg.conf
 cp -vpr /maven ~/.m2
+cp -vr /ssh ~/.ssh
 
 echo "Cloning convertapi-java..."
-git clone https://${GIT_USERNAME}:${GIT_SECRET}@github.com/ConvertAPI/convertapi-java.git
+ssh-keyscan github.com >> ~/.ssh/known_hosts
+git clone git@github.com:ConvertAPI/convertapi-java.git
 cd convertapi-java
 
 echo "Switching to the release branch..."