fix(wordlist): crash if ADD_WORDLIST_N_RULES build arg isn't set to true

wordlists/Dockerfile

@@ -5,15 +5,19 @@ ARG ADD_WORDLIST_N_RULES=false
 USER root
 
 WORKDIR /opt/wordlists
-RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && git clone https://github.com/danielmiessler/SecLists.git --depth 1
+RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && git clone https://github.com/danielmiessler/SecLists.git --depth 1 ||\
+    echo "Skip pulling SecLists, ADD_WORDLIST_N_RULES build arg is not set to true"
 
 WORKDIR /opt/rules
-RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && git clone https://github.com/NotSoSecure/password_cracking_rules.git --depth=1
+RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && git clone https://github.com/NotSoSecure/password_cracking_rules.git --depth=1 ||\
+    echo "Skip pulling password_cracking_rules, ADD_WORDLIST_N_RULES build arg is not set to true"
 
 WORKDIR /opt/wordlists
-RUN find . -type f -iname '*.tar.gz' -exec tar -xf {} \; -exec rm -f {} \; &&\
-    find ./SecLists -maxdepth 1 -type d ! -path './SecLists/Passwords' ! -path './SecLists' -exec rm -rf {} \;
+RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && find . -type f -iname '*.tar.gz' -exec tar -xf {} \; -exec rm -f {} \; &&\
+    find ./SecLists -maxdepth 1 -type d ! -path './SecLists/Passwords' ! -path './SecLists' -exec rm -rf {} \; ||\
+    echo "SecLists was not pulled, skipping optimisation step."
 
 WORKDIR /opt/rules
-RUN find . -iname '*.rule' -exec mv {} . \; &&\
-    find . -maxdepth 1 -type d ! -path '.' -exec rm -rf {} \;
+RUN [[ "$ADD_WORDLIST_N_RULES" == "true" ]] && find . -iname '*.rule' -exec mv {} . \; &&\
+    find . -maxdepth 1 -type d ! -path '.' -exec rm -rf {} \; ||\
+    echo "password_cracking_rules was not pulled, skipping optimisation step."