fix: install sshpass for testing purposes.

- also added missing build arguments for labelling

Dockerfile

@@ -19,6 +19,7 @@ LABEL org.opencontainers.image.authors="Dan Anglin <d.n.i.anglin@gmail.com>" \
       org.opencontainers.image.title="Pleroma Ansible Playbook" \
       org.opencontainers.image.description="Ansible playbook that installs, configures and customizes Pleroma on a Alpine host."
 
+# TODO: Remove sshpass when it is possible to do so.
 RUN \
     apk add --no-cache \
       ca-certificates=20191127-r1 \
@@ -27,6 +28,7 @@ RUN \
       openssl=1.1.1g-r0 \
       python3=3.8.2-r0 \
       bash=5.0.11-r1 \
+      sshpass=1.06-r0 \
     && \
     apk add --no-cache --virtual .build-deps \
       python3-dev=3.8.2-r0 \

Makefile

@@ -5,6 +5,7 @@ PLAYBOOK_FILE ?= "playbook.yml"
 DOCKERFILE = Dockerfile
 IMAGE_NAME ?= pleroma-ansible-playbook
 IMAGE_TAG ?= latest
+IMAGE_DATE := $(shell date --iso-8601=seconds)
 DOCKER_IMAGE = $(IMAGE_NAME):$(IMAGE_TAG)
 
 PHONY: secret_key_base signing_salt vapid_private_key vapid_public_key test_modules_unit image publish pleroma
@@ -36,7 +37,7 @@ test_modules_unit:
 	@find ./library -mindepth 1 -maxdepth 1 -type f -name test_*.py | xargs python3
 
 image:
-	@docker build -f $(DOCKERFILE) -t $(DOCKER_IMAGE) .
+	@docker build --build-arg BUILD_TAG=$(IMAGE_TAG) --build-arg BUILD_TIME=$(IMAGE_DATE) -f $(DOCKERFILE) -t $(DOCKER_IMAGE) .
 
 publish: image
 	@docker push $(DOCKER_IMAGE)