perf: make docker release 10 times faster (#5803)

* build: improve multistage docker build

* build: add dockerfile for ci

* build: add BuildDockerMultiplatform function in build.sh for ci

* ci: change build method

* build: add missing mod download command to the Dockerfile

* build: revert changes made ffmpeg installed

* build: use musl build for docker release

* ci: apply to dev version

* fix: don't login on pr

* fix: don't build_docker_with_aria2 on pr

---------

Co-authored-by: Andy Hsu <i@nn.ci>

Dockerfile.ci

@@ -0,0 +1,16 @@
+FROM alpine:edge
+ARG TARGETPLATFORM
+LABEL MAINTAINER="i@nn.ci"
+VOLUME /opt/alist/data/
+WORKDIR /opt/alist/
+COPY /${TARGETPLATFORM}/alist ./
+COPY entrypoint.sh /entrypoint.sh
+RUN apk update && \
+    apk upgrade --no-cache && \
+    apk add --no-cache bash ca-certificates su-exec tzdata; \
+    chmod +x /entrypoint.sh && \
+    rm -rf /var/cache/apk/* && \
+    /entrypoint.sh version
+ENV PUID=0 PGID=0 UMASK=022
+EXPOSE 5244 5245
+CMD [ "/entrypoint.sh" ]