✨ Add Dockerfile and entrypoint

Author: Teakowa

Dockerfile

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+FROM alpine:3.10
+
+COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+
+RUN set -ex ;\
+    sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories ;\
+    apk add --update bash git inotify-tools openssh ;\
+    git clone https://github.com/gitwatch/gitwatch.git ;\
+    install -b gitwatch/gitwatch.sh /usr/local/bin/gitwatch ;\
+    mkdir ~/.ssh ;\
+    echo 'Host *' > ~/.ssh/config ;\
+    echo '    StrictHostKeyChecking no' >> ~/.ssh/config ;\
+    chmod 700 ~/.ssh ;\
+    chmod +x /usr/local/bin/docker-entrypoint.sh ;\
+    rm -rf /var/cache/apk/* ;\
+    rm -rf gitwatch
+
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]

docker-entrypoint.sh

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+#!/bin/bash
+
+if [ -n "${SSH_PRIVATE_KEY}" ]
+then
+    echo "${SSH_PRIVATE_KEY}" > ~/.ssh/id_rsa
+    chmod 400 ~/.ssh/id_rsa
+fi
+
+if [ -n "${EMAIL}" ]
+then
+    git config --global user.email "${EMAIL}"
+fi
+if [ -n "${NAME}" ]
+then
+    git config --global user.name "${NAME}"
+fi
+
+if [ "${1:0:1}" = '-' ]
+then
+    set -- gitwatch "$@"
+fi
+
+exec "$@"
+# EOF