Fix for the docker build (#983)

Add gpg key for salt and add salt package

Dockerfile

@@ -1,4 +1,4 @@
-FROM mambaorg/micromamba
+FROM mambaorg/micromamba:bullseye
 ###################
 # BUILD ARGUMENTS #
 ###################
@@ -112,6 +112,11 @@ RUN echo "force-unsafe-io" > /etc/dpkg/dpkg.cfg.d/02apt-speedup \
 
 # Install APT packages
 RUN rm -rf /var/lib/apt/lists/*\
+ && apt-get update \
+ && apt-get -y install curl \
+ && mkdir /etc/apt/keyrings \
+ && curl -fsSL -o /etc/apt/keyrings/salt-archive-keyring-2023.gpg https://repo.saltproject.io/salt/py3/debian/11/amd64/SALT-PROJECT-GPG-PUBKEY-2023.gpg \
+ && echo "deb [signed-by=/etc/apt/keyrings/salt-archive-keyring-2023.gpg arch=amd64] https://repo.saltproject.io/salt/py3/debian/11/amd64/latest bullseye main" | tee /etc/apt/sources.list.d/salt.list \
  && apt-get update \
  && apt-get -y install bzip2 git nginx supervisor gcc salt-minion procps pv \
  && rm -rf /var/lib/apt/lists/*