Refactor ganache Dockerfile to use env vars

docker/ganache/Dockerfile

@@ -2,18 +2,9 @@ FROM trufflesuite/ganache-cli:latest
 
 RUN mkdir /home/ganache_db /home/ganache_keys
 
-ENTRYPOINT ["node", \
-    "/app/ganache-core.docker.cli.js", \
-    "-a", "10", \
-    "-e", "1000", \
-    "-d", \
-    "-m", "myth like bonus scare over problem client lizard pioneer submit female collect", \
-    "-p", "8545", \
-    "-i", "5778", \
-    "--db", "/home/ganache_db/", \
-    "-v", \
-    "-h", "0.0.0.0", \
-    "--account_keys_path", "/home/ganache_keys/keys.json", \
-    "--allowUnlimitedContractSize", \
-    "--noVMErrorsOnRPCResponse" \
-]
+WORKDIR /opt/concordia-ganache
+
+COPY ./docker/ganache/start-blockchain.sh .
+RUN ["chmod", "+x", "/opt/concordia-ganache/start-blockchain.sh"]
+
+ENTRYPOINT ["/opt/concordia-ganache/start-blockchain.sh"]

docker/ganache/start-blockchain.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+N_ACCOUNTS="${ACCOUNTS_NUMBER:-10}"
+ETHER="${ACCOUNTS_ETHER:-1000}"
+MNEMONIC="${MNEMONIC:-"myth like bonus scare over problem client lizard pioneer submit female collect"}"
+HOST="${HOST:-"0.0.0.0"}"
+PORT="${PORT:-8545}"
+ID="${NETWORK_ID:-5778}"
+
+node /app/ganache-core.docker.cli.js \
+  -a "$N_ACCOUNTS" \
+  -e "$ETHER" \
+  -m "$MNEMONIC" \
+  -h "$HOST" \
+  -p "$PORT" \
+  -i "$ID" \
+  --account_keys_path "/home/ganache_keys/keys.json" \
+  --db "/home/ganache_db/" \
+  --allowUnlimitedContractSize \
+  --noVMErrorsOnRPCResponse \
+  -d \
+  -v