docker tweak

Dockerfile

@@ -9,9 +9,11 @@ WORKDIR /code
 ADD go.mod go.sum ./
 RUN set -eux; \
     export ARCH=$(uname -m); \
-    WASM_VERSION=$(go list -m all | grep github.com/CosmWasm/wasmvm | awk '{print $2}'); \
+    WASM_VERSION=$(go list -m all | grep github.com/CosmWasm/wasmvm || true); \
     if [ ! -z "${WASM_VERSION}" ]; then \
-      wget -O /lib/libwasmvm_muslc.a https://github.com/CosmWasm/wasmvm/releases/download/${WASM_VERSION}/libwasmvm_muslc.${ARCH}.a; \
+      WASMVM_REPO=$(echo $WASM_VERSION | awk '{print $1}');\
+      WASMVM_VERS=$(echo $WASM_VERSION | awk '{print $2}');\
+      wget -O /lib/libwasmvm_muslc.a https://${WASMVM_REPO}/releases/download/${WASMVM_VERS}/libwasmvm_muslc.$(uname -m).a;\
     fi; \
     go mod download;