Refactor for shiv package

app/data/container-build/cerc-watcher-erc721/Dockerfile

@@ -0,0 +1,13 @@
+FROM node:16.17.1-alpine3.16
+
+RUN apk --update --no-cache add git python3 alpine-sdk
+
+WORKDIR /app
+
+COPY . .
+
+RUN echo "Building watcher-ts" && \
+    git checkout v0.2.19 && \
+    yarn && yarn build
+
+WORKDIR /app/packages/erc721-watcher

app/data/container-build/cerc-watcher-erc721/build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Build cerc/watcher-erc721
+
+# See: https://stackoverflow.com/a/246128/1701505
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+docker build -t cerc/watcher-erc721:local -f ${SCRIPT_DIR}/Dockerfile ${CERC_REPO_BASE_DIR}/watcher-ts