fixed BUG-132 failing to create symlink on first build by being explicit in Dockerfile on how to handle content in static/

BUGs

@@ -21,4 +21,3 @@ BUG-125: when an image is highlighted, then post the contextmenu on a different
 
 BUG-128: when restarting padb underneath pa, next web requests cause a 500...  (need to better catch sql I think, and maybe just retry?)
 BUG-130: moving files and then trying to go next page and it got confused...
-BUG-131: when I build a new padev or pa, the static links are not there, but I if just rm -sf, and up -d again they appear

Dockerfile

@@ -6,6 +6,13 @@ RUN groupadd -g ${PJM_GID} mythtv && useradd -r -u ${PJM_UID} -g ${PJM_GID} myth
 # sudo used in dev container
 RUN apt-get update && apt-get -y install libpq-dev mediainfo cmake libgl1-mesa-glx libglib2.0-0 libjpeg-turbo-progs ffmpeg git sudo
 COPY . .
+# be explicity with this special directory, don't presume the COPY . . above
+# has set things up perfectly from DEV to PROD
+RUN rm -rf static
+RUN mkdir -p static/Bin
+RUN mkdir -p static/Import
+RUN mkdir -p static/Storage
+RUN mkdir -p static/Metadata
 RUN pip3 install -r requirements.txt
 RUN pip3 install --upgrade pillow --user
 EXPOSE 80