no apk in ubunutu image - apt-get

docker/DebugDockerfile

@@ -2,7 +2,13 @@ FROM ubuntu:20.04
 LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 
 # We need root certificates to deal with teams api over https
-RUN apk --no-cache add ca-certificates go git musl-dev
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+        curl \
+        ca-certificates \
+        go \
+        git \
+        musl-dev
 
 COPY build/* /
 

docker/Dockerfile

@@ -2,8 +2,10 @@ FROM ubuntu:20.04
 LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 
 # We need root certificates to deal with teams api over https
-RUN apk --no-cache add curl
-RUN apk --no-cache add ca-certificates
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+        curl \
+        ca-certificates
 
 COPY build/* /
 

docker/logical-backup/Dockerfile

@@ -2,7 +2,7 @@ FROM ubuntu:20.04
 LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
-RUN apt-get update     \
+RUN apt-get update \
     && apt-get install --no-install-recommends -y \
         apt-utils \
         ca-certificates \

docs/developer.md

@@ -175,7 +175,7 @@ go get -u github.com/derekparker/delve/cmd/dlv
 * Add following dependencies to the `Dockerfile`
 
 ```
-RUN apk --no-cache add go git musl-dev
+RUN apt-get update && apt-get install -y go git musl-dev
 RUN go get github.com/derekparker/delve/cmd/dlv
 ```
 

ui/Dockerfile

@@ -4,7 +4,7 @@ LABEL maintainer="Team ACID @ Zalando <team-acid@zalando.de>"
 EXPOSE 8081
 
 RUN \
-  apk add --no-cache \
+  apt-get add --no-cache \
     alpine-sdk \
     autoconf \
     automake \
@@ -25,8 +25,7 @@ RUN \
     && \
   rm -rf \
     /root/.cache \
-    /tmp/* \
-    /var/cache/apk/*
+    /tmp/*
 
 COPY requirements.txt /
 COPY start_server.sh /

ui/run_local.sh

@@ -67,7 +67,7 @@ kubectl exec \
   )" \
   -- \
     sh -c '
-      apk add --no-cache socat;
+      apt-get add --no-cache socat;
       pkill socat;
       socat -v TCP-LISTEN:1234,reuseaddr,fork,su=nobody TCP:169.254.169.254:80
     ' \