Invalidate Docker cache by setting argument

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

Dockerfile

@@ -8,6 +8,7 @@ RUN groupadd -r satnogs \
 	&& install -d -m 755 -o satnogs -g satnogs /var/run/celery
 
 COPY requirements.txt /usr/local/src/satnogs-db/
+ARG SATNOGS_DECODERS_VERSION
 RUN pip install \
 	--no-cache-dir \
 	--no-deps \

docker-compose.yml

@@ -20,6 +20,8 @@ services:
   celery:
     build:
       context: '.'
+      args:
+        SATNOGS_DECODERS_VERSION: '$SATNOGS_DECODERS_VERSION'
     depends_on:
       - 'db'
       - 'redis'
@@ -41,6 +43,8 @@ services:
   web:
     build:
       context: '.'
+      args:
+        SATNOGS_DECODERS_VERSION: '$SATNOGS_DECODERS_VERSION'
     image: 'satnogs-db'
     ports:
       - '8000:8000'