dev: add run-container target

Adds an easy way to run the container image locally, to aid in
debugging. Refs #73.

justfile

@@ -8,4 +8,14 @@ dev:
 
 # build container image
 container:
-  podman build -f Containerfile .
+  podman build -t penumbra-dex-explorer -f Containerfile .
+
+# run container image
+run-container: container
+  podman run -it \
+  -e PENUMBRA_GRPC_ENDPOINT \
+  -e PENUMBRA_INDEXER_ENDPOINT \
+  -e NEXT_PUBLIC_CHAIN_ID \
+  -e PENUMBRA_INDEXER_CA_CERT \
+  -p 3000:3000 \
+  penumbra-dex-explorer