Update dockerfile for local dev (#76)

Author: blotus

Dockerfile

@@ -1,25 +1,29 @@
 ARG BUILD_ENV=git
-FROM docker.io/openresty/openresty:alpine-fat as with_deps
+
+FROM docker.io/openresty/openresty:alpine-fat AS with_deps
 RUN luarocks install lua-resty-http 0.17.1-0
 
-FROM with_deps as git
-ARG BUILD_ENV=git
+FROM with_deps AS git
 ARG LUA_LIB_VERSION=v1.0.11
-RUN if [ "$BUILD_ENV" == "git" ]; then apk add --no-cache git; fi
-RUN if [ "$BUILD_ENV" == "git" ]; then git clone -b "${LUA_LIB_VERSION}" https://github.com/crowdsecurity/lua-cs-bouncer.git ; fi
+RUN apk add --no-cache git
+RUN git clone -b "${LUA_LIB_VERSION}" https://github.com/crowdsecurity/lua-cs-bouncer.git /lua-cs-bouncer
 
-FROM with_deps as local
-RUN if [ "$BUILD_ENV" == "local" ]; then COPY ./lua-cs-bouncer/ lua-cs-bouncer; fi
+FROM with_deps AS local
+COPY lua-cs-bouncer/ /lua-cs-bouncer/
+
+FROM ${BUILD_ENV} AS final
+# (optional, if you want to use it in RUN steps)
+ARG BUILD_ENV
 
-FROM ${BUILD_ENV}
 RUN mkdir -p /etc/crowdsec/bouncers/ /var/lib/crowdsec/lua/templates/
-RUN cp -R lua-cs-bouncer/lib/* /usr/local/openresty/lualib/
-RUN cp -R lua-cs-bouncer/templates/* /var/lib/crowdsec/lua/templates/
-RUN cp lua-cs-bouncer/config_example.conf /etc/crowdsec/bouncers/crowdsec-openresty-bouncer.conf
-RUN rm -rf ./lua-cs-bouncer/
-COPY ./openresty /tmp
+RUN cp -R /lua-cs-bouncer/lib/* /usr/local/openresty/lualib/
+RUN cp -R /lua-cs-bouncer/templates/* /var/lib/crowdsec/lua/templates/
+RUN cp /lua-cs-bouncer/config_example.conf /etc/crowdsec/bouncers/crowdsec-openresty-bouncer.conf
+RUN rm -rf /lua-cs-bouncer
+
+COPY openresty /tmp
 RUN SSL_CERTS_PATH=/etc/ssl/certs/ca-certificates.crt envsubst '$SSL_CERTS_PATH' < /tmp/crowdsec_openresty.conf > /etc/nginx/conf.d/crowdsec_openresty.conf
 RUN sed -i '1 i\resolver local=on ipv6=off;' /etc/nginx/conf.d/crowdsec_openresty.conf
-COPY ./docker/docker_start.sh /
+COPY docker/docker_start.sh /
 
-ENTRYPOINT ["/bin/sh", "docker_start.sh"]
+ENTRYPOINT ["/bin/sh", "docker_start.sh"]