compose: add build args and remove defaults

- repository and hashes
- bitcoin version and sha256sums hash
Signed-off-by: Lakshya Singh <lakshay.singh1108@gmail.com>

vlsd/Dockerfile

@@ -12,9 +12,10 @@ RUN apk update && \
     protobuf-dev \
     rust
 
-ARG VLS_GIT_HASH=5712eb74b672ffd8b691b9e772e05a827d03e7df
-RUN echo building vlsd from hash: $VLS_GIT_HASH
-RUN git clone https://gitlab.com/lightning-signer/validating-lightning-signer.git vls
+ARG VLS_GIT_HASH \
+    VLS_REPO
+RUN echo "building vlsd from hash: $VLS_GIT_HASH"
+RUN git clone $VLS_REPO vls
 RUN cd vls && \
     git checkout $VLS_GIT_HASH && \
     cargo install --locked --path ./vls-proxy --bin vlsd2 --profile release --root /usr/local/ && \