allow to specify RSA key filename

Author: markhilton

README.md

@@ -20,7 +20,9 @@ In case of private repositories you also have to mount deployment SSH key author
 ### optional
 `TAG` - clone specified tag
 
-`BRANCH` - clone specified branch
+`BRANCH` - clone specified branch (defaults to master)
+
+`REPO_KEY` - RSA key filename (defaults to id_rsa)
 
 if cloning using repository username/password instead SSH deployment key, please provide `REPO_LINK` without leading `https://`
 
@@ -32,9 +34,9 @@ if cloning using repository username/password instead SSH deployment key, please
 ## Example run
 
 ```
-docker --rm run -ti \
+docker run --rm -ti \
     -v /path/to/clone/repository:/repository \
-    -v /path/to/authorized/id_rsa:/root/.ssh/id_rsa \
+    -v /path/to/authorized/id_rsa:/key:ro \
     -e REPO_LINK=crunchgeek/git-clone
     -e REPO_BRANCH=master
     -e REPO_TAG=1.0.0

init.sh

@@ -9,24 +9,35 @@ if [ -z "$REPO_BRANCH" ]; then
 	export REPO_BRANCH=master
 fi
 
+if [ -z "$REPO_KEY" ]; then 
+	export REPO_KEY=id_rsa
+fi
+
+echo "repository : $REPO_LINK"
+echo "branch     : $REPO_BRANCH"
 # check if credentials files exist
-if [[ -f "/root/.ssh/id_rsa" ]] ; then 
+if [[ -f "/key/$REPO_KEY" ]] ; then 
+	echo "key file   : $REPO_KEY"
+	cp /key/$REPO_KEY /root/.ssh/id_rsa
 	chmod 600 /root/.ssh/id_rsa
 fi
 
 if [ ! -z "$REPO_USER" ] && [ ! -z "$REPO_PASS" ]; then 
 	# clone with repository username & password
+	echo "credentials: username and password"
 	git clone -b $REPO_BRANCH https://$REPO_USER:$REPO_PASS@$REPO_LINK /repository
 elif [[ ! -f "/root/.ssh/id_rsa" ]] ; then 
 	echo -e "\033[1;91mERROR:\033[0m REPO_USER, REPO_PASS env variables or SSH deployment key missing"
 	exit 1
 else
 	# clone public repository or using ssh deployment key
+	echo "credentials: RSA key"
 	git clone -b $REPO_BRANCH $REPO_LINK /repository
 fi
 
 if [ ! -z "$REPO_TAG" ]; then 
 	cd /repository && \
+	echo "checking out repository tag: $REPO_TAG"
 	git checkout tags/$REPO_TAG
 fi