cln: remove quotes from env vars

- only build remote_hsmd_socket
- multiple layers for build caching
- download git repo in separate command to prevent redownload
- fix COPY of symlink not possible
- copy the bitcoin.conf file
- add git hook to ensure no difference
Signed-off-by: Lakshya Singh <lakshay.singh1108@gmail.com>

lightningd/bitcoin.conf

@@ -1 +0,0 @@
-../bitcoind/bitcoin.conf

lightningd/bitcoin.conf

@@ -0,0 +1,23 @@
+##
+## bitcoin.conf configuration file. Lines beginning with # are comments.
+##
+
+server=1
+rpcallowip=0.0.0.0/0
+whitelist=0.0.0.0/0
+txindex=1
+blockfilterindex=1
+
+[test]
+rpcbind=0.0.0.0
+rpcuser=rpcuser
+rpcpassword=VLSsigner1
+rpcport=18332
+port=18333
+
+[regtest]
+rpcbind=0.0.0.0
+rpcuser=rpcuser
+rpcpassword=VLSsigner1
+rpcport=38332
+port=38333