Use /dev/urandom to create random password (#2298)

* Make sure generated password is random

Use /dev/urandom to get a 32 char password

* Make sure generated password is random

Use /dev/urandom to generate 32 char password

* Make sure generated password is random

Author: leitzler

Dockerfile

@@ -24,7 +24,7 @@ RUN addgroup \
     -u 1000 \
     -G git \
     git && \
-  echo "git:$(date +%s | sha256sum | base64 | head -c 32)" | chpasswd
+  echo "git:$(dd if=/dev/urandom bs=24 count=1 status=none | base64)" | chpasswd
 
 ENV USER git
 ENV GITEA_CUSTOM /data/gitea

Dockerfile.aarch64

@@ -23,7 +23,7 @@ RUN addgroup \
     -u 1000 \
     -G git \
     git && \
-  echo "git:$(date +%s | sha256sum | base64 | head -c 32)" | chpasswd
+  echo "git:$(dd if=/dev/urandom bs=24 count=1 status=none | base64)" | chpasswd
 
 ENV USER git
 ENV GITEA_CUSTOM /data/gitea

Dockerfile.rpi

@@ -24,7 +24,7 @@ RUN addgroup \
     -u 1000 \
     -G git \
     git && \
-  echo "git:$(date +%s | sha256sum | base64 | head -c 32)" | chpasswd
+  echo "git:$(dd if=/dev/urandom bs=24 count=1 status=none | base64)" | chpasswd
 
 ENV USER git
 ENV GITEA_CUSTOM /data/gitea