Add CI for publishing docker image (#3)

Reviewed-on: LaconicNetwork/azimuth-watcher-ts#3
Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Co-committed-by: Nabarun <nabarun@deepstacksoft.com>

Dockerfile

@@ -0,0 +1,25 @@
+FROM node:18.16.0-alpine3.16
+
+RUN apk --update --no-cache add git python3 alpine-sdk jq
+
+WORKDIR /app
+
+COPY . .
+
+# Get the latest Git commit hash and set it in package.json of all watchers
+RUN COMMIT_HASH=$(git rev-parse HEAD) && \
+    find . -name 'package.json' -exec sh -c ' \
+    for packageFile; do \
+        jq --arg commitHash "$0" ".commitHash = \$commitHash" "$packageFile" > "$packageFile.tmp" && \
+        mv "$packageFile.tmp" "$packageFile"; \
+    done \
+    ' "$COMMIT_HASH" {} \;
+
+RUN echo "installing dependencies" && \
+    yarn
+
+RUN echo "Building azimuth-watcher and gateway-server" && \
+    yarn build --scope @cerc-io/azimuth-watcher --scope @cerc-io/gateway-server
+
+RUN echo "Install toml-js to update watcher config files" && \
+    yarn add --dev --ignore-workspace-root-check toml-js